Network Security
Firewalls, intrusion detection, network monitoring, segmentation, and secure access.
Forward
CISO ReviewedBuilds a mathematically accurate 'digital twin' of enterprise networks, letting teams verify network and security changes before they…
Zscaler
A cloud-native security-service-edge pioneer that routes all user traffic through a global proxy cloud instead of backhauling it…
Claroty
Cyber-physical systems protection platform securing industrial, healthcare and enterprise IoT devices for critical infrastructure operators.
Tailscale
A zero-configuration mesh VPN built on WireGuard that applies Google's BeyondCorp zero-trust model to make secure networking accessible…
Dragos
Industrial control system and OT cybersecurity platform with threat intelligence, detection and incident response services.
Illumio
A microsegmentation pioneer built on the assumption that breaches are inevitable, focused on containing lateral movement rather than…
TXOne Networks Inc.
OT and industrial control system cybersecurity built for zero operational disruption, protecting legacy manufacturing and critical infrastructure devices…
Island
Chromium-based enterprise browser that embeds governance, data-protection, and network controls at the browser layer.
Zero Networks
An automated, agentless microsegmentation platform that learns network behavior and generates least-privilege access policies without manual rule-writing.
IRONSCALES
AI-powered email security platform detecting and auto-remediating phishing, business email compromise, and account-takeover attacks.
secunet Security Networks
Germany's largest independent IT security company and the federal government's primary cybersecurity partner, best known for its SINA…
Cloudflare
A global edge network operator whose Zero Trust and DDoS-mitigation products run on the same infrastructure it uses…
Cato Networks
A single-vendor SASE pioneer that built its own global private backbone from day one, converging SD-WAN, firewall, SWG,…
Corelight
Open network detection and response platform built on Zeek, Suricata and machine learning.
Cloudbrink
Personal SASE platform delivering per-user zero-trust network access with performance that outpaces traditional VPN and ZTNA.
Zero Networks
Automated, agentless microsegmentation and just-in-time access to stop lateral movement and ransomware.
Cyolo
Secure Connectivity Platform unifying zero-trust network access, identity, and privileged access for OT and critical infrastructure.
Salvador Technologies
Israeli OT/ICS cyber-recovery vendor whose air-gapped, USB-deployed backup hardware restores infected industrial workstations to operation in under a…
Axiado
A hardware security startup building an AI-driven Trusted Control/Compute Unit chip that combines root-of-trust, secure boot, and runtime…
Dragos
Industrial cybersecurity platform giving OT/ICS teams visibility, threat detection and incident response for critical infrastructure networks.
Elisity
San Jose-based identity-based microsegmentation platform stopping lateral movement across IT, OT, and IoT without agents or new hardware.
ColorTokens Inc.
Agentless microsegmentation platform for enforcing Zero Trust breach containment across data centers, OT, and cloud.
Xona
A clientless, browser-based zero-trust remote access platform purpose-built for operational technology, replacing VPNs and jump servers for HMIs,…
American Binary
Deep-tech cybersecurity company building the first enterprise VPN fully compliant with the NSA's CNSA 2.0 post-quantum cryptography standard.
Netskope
Cloud-delivered SASE platform combining secure web gateway, CASB, ZTNA and data protection with a unified policy engine.
Cydome Security
Maritime-specific cybersecurity platform providing real-time IT/OT/IoT asset visibility and regulatory compliance for vessels and fleets.
Proofpoint
Proofpoint is a major, Thoma Bravo-owned enterprise cybersecurity provider protecting organizations across email security, identity threat defense, data…
Bastille
Bastille builds an enterprise wireless airspace security platform that uses software-defined radio to detect, locate, and classify unauthorized…
Red Sift
Cloud email security and brand protection platform automating DMARC/BIMI enforcement, now expanding into attack surface management.
Cape
Cape is a privacy-first U.S. mobile carrier that runs its own network core to block SIM-swap, SS7 interception,…
Shift5
A Rosslyn, VA-based OT cybersecurity company founded by Army Cyber Command veterans that monitors and defends onboard data…
Ocean Security
Israeli startup using AI agents that read sender intent and context to catch AI-generated phishing emails that pattern-matching…
Sublime Security
A New York-based vendor that replaces black-box secure email gateways with an open, detection-as-code email security platform.
Nozomi Networks
OT and IoT network monitoring platform providing anomaly and threat detection for industrial control system environments.
Hornetsecurity
European Microsoft 365 email security and backup vendor, now part of Proofpoint after a May 2025 acquisition.
Dispel
Zero Trust secure remote access platform purpose-built for industrial control systems and OT environments using Moving Target Defense.
Dispersive Holdings Inc.
Roswell, Georgia-based stealth networking company using patented multipath encryption to make network traffic invisible to attackers.
Algosec
Established network security policy management platform that automates firewall, router, and cloud security-group rule management across hybrid environments.
BackBox
Network automation and security platform that automates backup, patching, and configuration management for network devices across hybrid, multi-cloud…
Whalebone
No-install, DNS-level network security deployed through telecom operators and ISPs, protecting hundreds of millions of end users without…
Portnox
Portnox delivers cloud-native network access control and zero trust network access, securing over a million devices and 40…
Sublime Security
Transparent, rules-based email security platform that lets security teams write, test, and audit their own detection logic instead…
Ordr
Agentless connected-device security platform discovering and securing IoT, medical devices, and OT, with independent recognition from KLAS Research…
Nym Technologies
Swiss developer of a decentralized mixnet network and NymVPN, designed to protect network metadata and traffic patterns against…
Ermes Cyber Security
Italian AI-driven browser security company protecting corporate web browsing from data exfiltration and behavior-based web threats, recognized by…
Zeroport
Israeli startup replacing IP-based remote access with a patented non-IP hardware bridge, aiming to eliminate the VPN and…
Netskope
A security-service-edge vendor built around a cloud-native inline proxy for CASB, SWG, and ZTNA, which completed its IPO…
Palo Alto Networks
The largest pure-play cybersecurity vendor, selling NGFW appliances alongside a sprawling platform of cloud, SOC, and Zero Trust…
Gigamon
A network-traffic visibility vendor whose Deep Observability Pipeline extracts and filters network-derived telemetry, including decrypted data in motion,…
Industrial Defender
Long-standing OT/ICS cybersecurity vendor providing asset visibility, vulnerability management, and NERC CIP compliance for industrial environments.
Lattice Semiconductor (Sentry Security Solutions)
Public FPGA maker Lattice Semiconductor's Sentry solution stack and secure control FPGAs provide hardware root-of-trust and platform firmware…
Titania
Network configuration security software that virtually models device behavior to find exploitable misconfigurations before attackers do, trusted by…
Defense Unicorns
A founder-led defense software-supply-chain company that reached unicorn status on a $136M Series B.
A10 Networks (A10 Defend)
Publicly traded network infrastructure company whose A10 Defend suite provides AI-enhanced DDoS mitigation and application/API traffic protection.
Tufin
A publicly traded network security policy management platform that automates firewall and cloud security policy changes across multi-vendor…
NinjaOne
An Austin automated endpoint-management leader valued at $12.3 billion after a large Series C extension.
DNSFilter
Washington DC-based DNS security provider using real-time AI domain analysis to block malicious content for 4M+ end users.
CrowdSec
Open-source, crowdsourced intrusion prevention system that aggregates malicious-IP signals from a global community of users.
OPSWAT
OPSWAT protects critical infrastructure with prevention-first technology — deep content disarm and reconstruction, removable media control, and air-gapped…
Viasat
Publicly traded satellite communications and defense contractor whose Type 1-certified encryption devices secure classified government and military communications.
Conceal
Conceal provides browser-native isolation and zero-trust web security through ConcealBrowse, routing unverified web traffic through remote isolation while…
SCATR
Cleveland-based Zero Trust Transit company protecting data in motion with patented traffic obfuscation and adaptive routing, aimed at…
Airbus CyberSecurity
Cyber-defense arm of Airbus Defence and Space delivering encryption, threat detection, security orchestration, and 24/7 SOC services to…
LibraCyber
LibraCyber (formed from the 2026 combination of email security vendor Libraesva and security-awareness company Cyber Guru) is a…
Todyl
Todyl provides a unified, single-agent SASE, SIEM, EDR, MXDR, SOAR, and GRC security platform built specifically for managed…
SAM Seamless Network
A decade-old Tel Aviv home-network security pioneer, embedded with major carriers and acquired by Qualcomm.
seraphic
Seraphic, based in Palo Alto, California, builds browser security technology that provides continuous in-session protection, turning any standard…
Upstream Security
Israeli automotive cybersecurity company providing cloud-based detection and response for connected and autonomous vehicle fleets, backed directly by…
Acalvio Technologies
A decade-old Santa Clara deception-technology vendor using AI-driven decoys and honeytokens to catch intruders across IT, OT, identity,…
Internet Initiative Japan (Safous Zero Trust)
IIJ's Safous zero trust platform provides secure remote access, OT privileged access, and attack surface assessment for Japanese…
Endace
New Zealand-founded pioneer of full packet capture technology, providing scalable network recording for security investigation and forensics.
Everfox
Defense-grade zero trust and cross-domain security vendor, rebranded from Forcepoint Federal to serve government and critical-infrastructure missions.
FireMon
Lenexa, Kansas-based creator of the network security policy management category, unifying firewall and cloud policy across 120+ platforms.
Aeris (IoT Watchtower)
Cellular IoT connectivity provider whose IoT Watchtower product embeds Secure Service Edge-style threat detection and zero-trust policy controls…
Cylus
Cylus builds network detection and monitoring purpose-built for railway and metro signaling and control systems, backed by rail…
Barracuda
KKR-owned, Campbell, California-based security vendor covering email security, CloudGen/SecureEdge network security and SASE, application firewalling and data protection…
ST Engineering Cybersecurity
ST Engineering Cybersecurity is the info-security division of Singapore's ST Engineering, providing government-grade encryptors, cross-domain solutions, and data…
HYAS Infosec
Protective DNS and adversary-infrastructure threat intelligence platform, independently AV-TEST validated to block the majority of malware and phishing…
Infodas
German cross-domain security vendor, now an Airbus subsidiary, providing NATO- and EU SECRET-accredited hardware gateways for moving data…
Arista Networks
A publicly traded networking company whose Arista NDR division, built on its Awake Security acquisition, embeds AI-driven network…
Nile
Nile, founded by former Cisco executives John Chambers and Pankaj Patel, delivers campus and branch networking as a…
SquareX
SquareX is a San Francisco-based browser security company that built a Browser Detection and Response (BDR) platform —…
ExtraHop
A network detection and response vendor using cloud-scale machine learning on east-west traffic to spot behavioral anomalies and…
Secturion Systems
An NSA-certified hardware encryption vendor for defense platforms, acquired by Carlyle in July 2026.
CUJO AI
Network intelligence and cybersecurity platform embedded in ISP and mobile-operator networks, protecting connected devices at massive scale.
Mimecast
Established email and collaboration security vendor offering threat protection, insider risk management, and awareness training, taken private by…
SquareX (now part of Zscaler)
Browser Detection and Response pioneer protecting against malicious extensions, browser-based malware, and identity attacks, acquired by Zscaler in…
Inky
AI-driven email security vendor known for in-inbox warning banners that coach users on phishing risk, acquired by MSP…
OneLayer
Tel Aviv-based network security startup securing private LTE/5G cellular networks and connected IoT/OT devices with visibility and zero-trust…
EfficientIP
Paris-based DDI (DNS-DHCP-IPAM) vendor whose SOLIDserver platform secures DNS infrastructure against exfiltration and DDoS, recently acquired by private…
Advenica
Publicly traded Swedish manufacturer of data diodes and cross-domain security products approved for classified networks up to TOP…
NetFoundry
Creator and commercial steward of OpenZiti, an open-source zero-trust networking framework that embeds identity-based access directly into applications…
Menlo Security
A Mountain View, California pioneer of cloud-based browser isolation, now positioning itself as a secure enterprise browser platform,…
PQShield
PQShield builds post-quantum cryptography libraries and hardware accelerators, including quantum-resistant TLS/network encryption implementations, to help organizations transition network…
NTT Communications Corporation
The global ICT arm of NTT, bundling managed security and SOC services into its worldwide network.
TigerByte Cyber
TigerByte Cyber hardens legacy aircraft, satellites, and drones against cyberattacks with plug-and-play, hardware-enforced edge security.
PlaxidityX
PlaxidityX, formerly Argus Cyber Security, is one of the largest independent automotive cybersecurity vendors, protecting connected vehicles for…
OTOPIQ Security
Jersey City OT security firm built on NanoLock's device-protection technology, enforcing zero-trust controls at the industrial device itself.
Fortinet
The highest-volume firewall vendor globally, built around custom ASIC-accelerated appliances and a broad Security Fabric of integrated products.
Cisco (Secure Firewall)
CISO ReviewedCisco's Secure Firewall line embeds NGFW, IPS, and zero-trust segmentation into the networking giant's dominant enterprise infrastructure footprint.
Leonardo
A European defense group building owned Zero Trust technology via stakes in SSH Communications, Becrypt, Axiomatics, and Arbit.
Corero Network Security
Publicly traded DDoS protection vendor offering real-time, line-rate detection and mitigation appliances and DDoS-as-a-service.
Radware
Radware is a publicly traded (NASDAQ: RDWR) cybersecurity vendor providing DDoS protection, web application firewalls, and bot management…
Red Piranha
Red Piranha's Crystal Eye XDR platform consolidates protection, detection, and response across cloud, on-prem, and endpoints into one…
BlueCat
Toronto-based DDI (DNS, DHCP, IP address management) vendor whose platform gives large enterprises centralized visibility and control over…
AhnLab
AhnLab is a publicly traded South Korean cybersecurity vendor offering antivirus, network firewall/UTM, and malware defense products used…
NSFOCUS
NSFOCUS is a Beijing- and Santa Clara-based network security vendor providing volumetric DDoS mitigation, intrusion prevention, and web…
NordLayer
NordLayer is Nord Security's business network security platform, delivering SASE and Zero Trust Network Access (ZTNA) capabilities such…
Radiflow
Israeli OT/ICS security vendor, majority-owned by Turkey's Sabanci Group, offering passive network monitoring and business-impact risk scoring for…
Aviatrix
Aviatrix builds a cloud-native networking and security fabric that governs workload-to-workload communication across multicloud, Kubernetes, and serverless environments,…
Alkira
Alkira delivers a fully managed "Network Cloud" that provisions global network fabric with built-in firewalling, segmentation, and routing…
Graphiant
Graphiant delivers Network-as-a-Service edge connectivity that consolidates SD-WAN, firewalling, and zero-trust access into a single subscription, aimed at…
10ZiG Technology
10ZiG Technology builds thin and zero client hardware and software that shrink the endpoint attack surface for virtual…
Aliro
A Harvard-spinout Series A building vendor-agnostic entanglement-based quantum networking software.
Phosphorus Cybersecurity
An xIoT security specialist that remediates vulnerabilities across unmanaged connected devices, acquired by Dragos.
Queue-it
Queue-it is a global provider of online traffic orchestration technology, best known for its virtual waiting room product…
Photonic
Vancouver-area quantum company building distributed quantum computing and networking with silicon T-centre qubits and photonic links, including repeaters…
Kigen
Cambridge-based Arm spin-out providing eSIM and remote SIM provisioning security technology for IoT devices.
Dream Security
A Tel Aviv sovereign AI and cyber-defense company, co-led by Shalev Hulio and Sebastian Kurz, valued at $3B…
Enea (AdaptiveMobile Security)
Enea's telecom-focused security division protecting mobile network operators from signaling fraud, SMS spam, and 5G-era network attacks.
FirstPoint Mobile Guard
Network-based cellular security for mobile fleets and cellular-connected IoT that blocks SS7/telecom-layer attacks without installing software on the…
RazorSecure
RazorSecure provides real-time cybersecurity monitoring for onboard train systems and trackside rail infrastructure, backed by a cooperation agreement…
SIGA Data Security
OT/ICS anomaly detection vendor that monitors physical-layer electrical signals from industrial sensors and actuators, rather than network traffic,…
Arbor Networks
Arbor Networks is the DDoS protection brand operated today as NETSCOUT's dedicated security division, built on 25 years…
SecuLore
SecuLore builds Paladin, a passive network-monitoring appliance purpose-built to protect 911 dispatch centers and public safety networks, and…
Jizo AI
Jizo AI (formerly SESAME IT) builds an AI-driven network detection and response platform for SOC teams, combining full…
Owl Cyber Defense
Pure-play maker of hardware-enforced data diodes and NCDSMO Baseline-listed cross domain solutions for government, defense, and critical infrastructure…
Opscura
Spanish OT/ICS security vendor that cloaks industrial network traffic at Layer 2 to protect legacy, unpatchable operational technology…
Sitehop
UK-based Sitehop builds FPGA hardware encryption appliances for ultra-low-latency, quantum-ready protection of high-speed data-in-motion traffic.
Corsa Security
Corsa Security builds a network security virtualization platform that lets large enterprises and service providers scale next-generation firewall…
Allot
A publicly traded (Nasdaq/TASE: ALLT) Israeli network intelligence vendor that sells DDoS protection and Security-as-a-Service bundles directly through…
Gatewatcher
A French network detection and response vendor named a Gartner Magic Quadrant Visionary, backed by EUR25 million in…
Kentik
Network observability platform for real-time traffic visibility and DDoS detection across cloud and internet infrastructure, acquired by Infoblox…
Rhebo
A Leipzig-based OT and IIoT security company providing non-intrusive network anomaly detection and monitoring for critical infrastructure and…
Auvik Networks
Auvik is a Waterloo, Canada-based network management and monitoring platform used heavily by managed service providers to gain…
AT&T Business
A telecom incumbent delivering network-native security via AT&T Dynamic Defense, managed SASE, and LevelBlue.
HEQA Security
Israeli maker of quantum-safe appliances combining quantum key distribution with post-quantum cryptography overlays; formerly QuantLR.
QTI (Quantum Telecommunications Italy)
Florence quantum key distribution (QKD) company, a spin-off of the Italian CNR optics institute and a subsidiary of…
Red Access
A Series A Tel Aviv agentless browser-security vendor backed by Norwest, S Ventures, and Singtel Innov8.
Versa Networks
A single-vendor SASE provider offering SD-WAN, NGFW, ZTNA, and now a 'sovereign SASE' option for customers with data-residency…
Ekinops
A French networking vendor building a SASE stack from Olfeo and Chimere, including on-premises options.
Akamai (App & API Protector)
Edge-network security business protecting web applications, APIs and DDoS surfaces at global CDN scale.
Guardio
AI-powered browser security app protecting 1.5 million consumers with real-time phishing and malicious-site blocking, valued at $1.1 billion.
ntop
Italian developer of open-source and commercial network traffic monitoring tools ntopng and nDPI, including encrypted-traffic analysis.
Tempered
Zero trust network micro-segmentation platform (Airwall) built on Host Identity Protocol, acquired by Johnson Controls in 2022 to…
RiskAnalytics
Operates the SecureDNS managed DNS-security service and ShadowNet threat-intelligence feed, distributed widely through ISAC/ISAO partnerships into critical-infrastructure and…
Halon
Swedish-built MTA and email-security infrastructure platform for high-volume mail operators, now under Intera Partners ownership with an expanded…
Armour Communications
London-based secure communications vendor providing NCSC-approved encrypted voice, messaging, and conferencing for government and defense customers on everyday…
Sepio Systems
A Maryland-based asset risk management vendor that detects rogue and manipulated hardware at the physical/electrical layer, filling a…
Veracity Industrial Networks
Ann Arbor-based OT security vendor applying software-defined networking to build deny-by-default, secure-by-design industrial control system networks for energy,…
Centripetal Networks
Intelligence-led managed network security vendor whose CleanINTERNET service applies threat intelligence at the network edge in real time…
Garland Technology
Garland Technology makes network TAPs, packet brokers, and data diodes that feed security and monitoring tools with reliable,…
SecuLetter
A publicly-listed (KOSDAQ) South Korean cybersecurity firm focused exclusively on Content Disarm and Reconstruction (CDR) for email and…
Nord Security
Nord Security, best known for the consumer product NordVPN, also runs a business security division built around NordLayer…
AI EdgeLabs
AI-native runtime security platform for edge, IoT, and OT infrastructure, selected by industrial IoT hardware vendor Advantech as…
Infoblox
Large private-equity-backed DDI (DNS/DHCP/IPAM) vendor whose BloxOne Threat Defense uses DNS-layer visibility to detect malware, data exfiltration, and…
Netsweeper
Waterloo, Ontario-based web and DNS content filtering vendor whose classification technology is deployed by schools, telecoms, and governments…
QuSecure
QuSecure builds a software-only platform, QuProtect, that discovers where classical cryptography is used on an organization's network and…
NETSCOUT
A four-decade, NASDAQ-listed network-visibility and DDoS-defense incumbent (Arbor, Omnis).
Spur Intelligence
A Florida IP-intelligence vendor detecting VPN, proxy, and AI-bot traffic, with strong retention and a large new round.
NetBird
A Berlin open-source WireGuard-based Zero Trust networking company that closed a $10M Series A in January 2026.
dope.security
Mountain View startup building a secure web gateway that inspects traffic directly on the endpoint instead of routing…
CR Group Nordic
A Stockholm, PE-backed roll-up (formerly C-Resiliens) consolidating national European encryption and secure-comms specialists into a sovereign NATO/EU alternative.
NTT DOCOMO Business (Managed Security Services)
NTT DOCOMO Business embeds managed security — including network-as-a-service with built-in protection — into its global telecom and…
EasyDMARC
AI-powered platform simplifying DMARC, SPF, and DKIM deployment to stop phishing, domain spoofing, and business email compromise.
Open Systems
Zurich-based SASE and managed detection and response provider, now a Swiss Post subsidiary, recognized repeatedly in Gartner's SASE…
Venari Security
Encrypted traffic analysis platform that detects threats and anomalous behavior in encrypted network traffic using machine learning and…
Genie Networks
Publicly listed Taiwanese vendor of carrier-grade DDoS detection/mitigation and network traffic analytics for ISPs, mobile operators, and data…
NanoLock Security
An Israeli Series B company that embeds device-level protection into OT and IoT hardware such as smart meters…
6WIND
6WIND's DPDK-based virtual router software includes an IPsec VPN gateway product line, replacing dedicated networking hardware with carrier-grade…
Allentis
Allentis makes ANSSI-qualified network TAPs and monitoring probes for critical infrastructure and defense networks; acquired by nuclear engineering…
PowerDMARC
A DMARC-as-a-service platform that manages email authentication (SPF, DKIM, DMARC, BIMI, MTA-STS) to stop domain spoofing and phishing…
Link11
Link11 provides cloud-based DDoS protection, web application security, and secure CDN/DNS services from a European-operated network.
Bittium
Bittium is a publicly traded Finnish company whose Secure Communications product line builds hardened, encrypted smartphones and mobile…
Q*Bird
Dutch deep-tech startup spun out of QuTech/TU Delft building measurement-device-independent quantum key distribution hardware for quantum-safe network communications.
Progress Flowmon
Network detection and response platform, born as Czech spin-off Flowmon Networks, now sold and developed as Progress Flowmon…
WiJungle
Gurugram-based unified network security gateway vendor consolidating firewall, VPN, IPS, WAF, SD-WAN, and DLP into a single platform…
Byos
Byos builds hardware- and software-based micro-segmentation that isolates individual devices at the network edge, targeting OT, healthcare, and…
Hillstone Networks
Hillstone Networks, founded by former NetScreen engineers, builds next-generation firewalls and cloud workload protection under what it calls…
Kasada
Kasada is a Sydney-founded bot-mitigation company that combats automated fraud and credential-stuffing attacks by targeting attacker economics rather…
Twingate
Twingate provides a zero-trust network access (ZTNA) platform positioned as a modern, easier-to-deploy alternative to traditional corporate VPNs,…
Intelligent Waves
A Reston, VA defense integrator with in-house autonomous pentesting (SHADOW) and zero trust (GRAYPATH) products.
Qoria
Qoria is an Australia-based, ASX-listed provider of digital safety and student wellbeing solutions, built around subsidiary brands Linewize…
Cisco Systems
A scaled public incumbent whose security portfolio, built through Splunk, Duo, and AI-security acquisitions, rides on its networking…
LQUOM
Yokohama quantum-communication startup developing quantum repeaters for long-distance quantum networks and a quantum internet.
Forescout
A device-visibility and network access control platform that discovers and classifies every connected device, including unmanaged IT, IoT,…
Libraesva
An Italian email-security specialist (about 40 employees) extending into awareness training through its Cyber Guru acquisition.
MokN
A Paris decoy-portal credential-theft prevention startup, Google Ventures' first French investment.
ClearVPN (MacPaw)
One-tap consumer VPN from Ukrainian software company MacPaw, offering encrypted browsing and free access for Ukrainian users.
Niagara Networks
Network visibility vendor building packet brokers, bypass switches, and TAPs that feed the right traffic to security and…
Nexusguard
Hong Kong-based DDoS mitigation provider operating a global scrubbing-center network and white-labeled anti-DDoS services for telecoms and internet…
Cybera
A Secure SD-WAN and managed security product line for highly distributed multi-site retailers, now operated as part of…
Telesoft Technologies
Telesoft Technologies builds carrier-scale network monitoring and FPGA-accelerated threat detection hardware and software used by telecom operators, governments,…
Red Trident Inc
A Houston-based, veteran-owned OT/ICS cybersecurity firm delivering continuous monitoring, threat hunting, and assessment services for energy, water, and…
TCPWave
DDI (DNS, DHCP, IPAM) platform with security-hardened DNS built in to defend against DDoS, tunneling, and data exfiltration…
Firezone
Open-source, WireGuard-based zero trust network access platform offering peer-to-peer encrypted remote access with IdP-integrated, group-based policies.
Stamus Networks
Suricata-based network detection and response (NDR) vendor offering transparent, tunable detection logic under its Clear NDR platform.
Fidelis Security
Fidelis Security provides network detection and response (NDR), deception technology, and endpoint/cloud detection under an 'active XDR' banner,…
Prosimo
Prosimo provides a multicloud networking and security platform that combines application-aware connectivity, security controls, and cloud cost management…
TrueFort
TrueFort provides real-time microsegmentation and application behavior monitoring for workloads and applications, aimed at stopping lateral movement inside…
Qi An Xin
Qi An Xin (QAX) is one of China's largest cybersecurity companies, publicly traded on Shanghai's STAR Market, with…
Aryaka Networks
Aryaka is a unified SASE (Secure Access Service Edge) provider that has been building its own private global…
Accenture
A global systems integrator buying scaled security capability via CyberCX, a $4.175B Dragos stake, runZero, and NetRise.
Sparkle
International carrier (Telecom Italia Sparkle) that has launched quantum-safe network services; tracked here for those services only.
Qualcomm
A global chipmaker that acquired home-network security firm SAM Seamless Network, reportedly for over $150M.
Parsons
A NYSE-listed engineering firm that acquired utility OT cybersecurity vendor IPKeys Power Partners for $43M.
TRIOVEGA (edge.SHIELDOR)
An industrial OT security product from a German Industry 4.0 engineering firm that hardens shop-floor connectivity against cyber…
Timus Networks
A Tampa cloud-native SASE platform for MSPs acquired by CyberFOX.
IO River
A Boston multi-CDN orchestration startup reducing edge-vendor lock-in, which raised a $20M Series A in January 2026.
SafeHouse Tech
Indo-Israeli cloud security platform that sits as the first point of contact for internet traffic, with a flagship…
Rohde & Schwarz Networks and Cybersecurity
German high-assurance encryption and firewall division of Rohde & Schwarz, certified for NATO SECRET-level government and defense communications,…
HPE Aruba Networking
HPE's Aruba networking division, whose ClearPass Policy Manager delivers Zero Trust network access control integrated with 150+ third-party…
Akimbo Technologies
Canadian defense-sector cybersecurity firm whose DEFENSA embedded software applies fault-tolerant computing to detect and self-heal cyberattacks on military…
Labris Networks
A Turkish network security vendor building domestically certified Unified Threat Management firewalls and DDoS mitigation appliances for government,…
cPacket Networks
Ultra-low-latency network packet brokering, capture and observability infrastructure that feeds full-fidelity traffic visibility to security and performance-monitoring tools.
Soliton Systems
Soliton Systems' IT Security division sells certificate-based network access control (NetAttest EPS), secure file transfer (FileZen), and secure…
PacketWatch
Scottsdale-based threat hunting firm offering proprietary packet-level network monitoring, managed detection and response, and incident response services.
Zuul IoT
Maryland-based OT and industrial IoT security platform combining device identity, behavioral endpoint protection, and passive network defense for…
LiveAction
Network detection and response platform (ThreatEye) analyzing encrypted traffic for threats without decryption, built on technology from its…
VIPRE Security Group
A Ziff Davis-owned email and endpoint security vendor built on a 25-plus-year threat intelligence lineage, now expanding into…
MixMode
MixMode is an AI-driven network detection and response vendor using unsupervised machine learning to baseline normal network behavior…
ElastiFlow
An Oakland-based network observability company offering unsampled flow data collection, marketed for both network performance monitoring and security…
Genians
Genians is South Korea's leading Network Access Control vendor, extending its NAC engine into Zero Trust Network Access…
WatchGuard Technologies
WatchGuard is a Seattle-based network security vendor best known for its Firebox unified threat management appliances, now expanding…
Meter
Meter designs, builds, and operates full-stack enterprise networks — internet, wired, Wi-Fi, and cellular — as a managed…
Invisinet Technologies
A Houston zero-trust vendor using patented First Packet Authentication to cloak OT and IoT networks at the protocol…
Twenty
An Arlington defense startup building AI-powered offensive cyber tools, a unicorn about a year after emerging from stealth.
Netography
A Maryland cloud-native network detection and response platform that gives visibility into encrypted, atomized network traffic without deep…
TerraZone
An Israeli seed-stage ZTNA vendor focused on micro-segmentation, with strategic backing from WHEN Group.
Juniper Networks
A core networking vendor whose SRX firewall line and Mist AI-driven networking are now being integrated into HPE's…
KPIT
An Indian automotive-software engineering firm acquiring Israeli automotive security firm Cymotive for up to $120M in 2026.
Cynamics
Cynamics is an AI-driven, agentless network detection and response platform that claims to infer full network visibility from…
CyberHive
CyberHive builds zero-trust, quantum-safe network connectivity software for defence, aerospace, maritime, and other bandwidth-constrained, high-risk environments.
OTIFYD
OTIFYD is a UK-based operational technology (OT) cybersecurity firm that combines ICS-specific consulting, incident response, and technology solutions…
Critifence
A Tel Aviv-based ICS/SCADA security vendor, founded by Unit 8200 veterans, whose SCADAGate and SCADADome products monitor and…
Bkav
Vietnam's dominant antivirus and endpoint security vendor, AV-TEST certified, operating as the cybersecurity division of a larger founder-controlled…
Wedge Networks
Calgary-based network security vendor using deep content inspection and an embedded neural network to block never-before-seen malware in…
Viettel Cyber Security
The cybersecurity arm of Viettel Group, offering SOC, threat intelligence, and red-team services in Vietnam and expanding regionally.
Cymotive Technologies
A Tel Aviv automotive cybersecurity firm with direct OEM lineage, being taken to full ownership by KPIT.
Securepoint
A nearly 30-year-old German SME security vendor with a 5,800-partner channel, moved into an Accel-KKR-backed continuation fund.
Keep Aware
Austin, Texas enterprise browser security platform that deploys as a lightweight extension into existing browsers to stop phishing…
Check Point Software Technologies
One of the original firewall vendors, now selling the Quantum NGFW line alongside cloud, endpoint, and SASE products…
Aura
A Boston consumer digital-safety suite that acquired Pango (Hotspot Shield) with about $100M of acquisition financing.
Copia Automation
A New York version-control and recovery platform for PLC and industrial OT code.
Hotspot Shield
Hotspot Shield is a consumer VPN product, now owned by digital-safety company Aura, built on the proprietary Catapult…
Mako Networks
Cloud-managed network security appliances built for PCI DSS compliance across distributed multi-location retail, hospitality, and fuel businesses.
NetQuest Corporation
Employee-owned New Jersey firm building packet brokers and optical network monitoring hardware that feeds threat-hunting and lawful-intercept systems…
Threater
Threater (formerly ThreatBlockr, originally Bandura Cyber) automates enforcement of large-scale cyber threat intelligence feeds directly on the network,…
FirstWave Cloud Technology
ASX-listed cybersecurity-as-a-service platform (CyberCision) that lets telcos and MSPs white-label email, network security, and compliance auditing tools for…
Privafy
Cloud-native security-as-a-service startup bundling firewall, encryption, IDS/IPS, DLP and VPN into a single edge platform for enterprises, telecom…
HARMAN Automotive Cybersecurity
In-vehicle intrusion detection and prevention division of Samsung-owned HARMAN International, built on the 2016 TowerSec acquisition, protecting automotive…
SecureCo
Builds stealth and obfuscation technology for data-in-transit protection, aiming to make network connections themselves harder to discover rather…
PacketViper
Pittsburgh-based network security vendor combining active deception with Automated Moving Target Defense in a single agentless appliance for…
MON5
Italian OT/industrial cybersecurity startup mapping devices, vulnerabilities, and network anomalies across European critical infrastructure and manufacturing environments.
Intrusion Inc.
Publicly traded (NASDAQ: INTZ) network security vendor whose Shield product line blocks malicious traffic in real time using…
Zentera Systems
Zentera Systems is a San Jose-based zero trust microsegmentation vendor whose Virtual Chamber and CoIP Platform technology isolates…
OpenText Bricata
OpenText’s network detection and response (NDR) product line, originally built by Bricata, giving OpenText customers east-west network traffic…
Netgate
Netgate, operating as Rubicon Communications LLC, is the commercial company behind pfSense, the widely used open-source firewall/router platform,…
Zenarmor
Zenarmor, formerly known as Sunny Valley Networks, sells a single-pass SASE and next-generation firewall software layer that adds…
Gcore
Gcore is a Luxembourg-headquartered edge computing and content delivery company whose global network also delivers DDoS protection and…
Ultra Cyber Ltd
A 200-plus-staff UK sovereign secure-communications and datalink security firm being acquired by Airbus Defence and Space.
4Elitech
Spanish specialist in industrial and critical-infrastructure (OT) cybersecurity; acquired by Aiuken Cybersecurity in September 2026.
Nano Corp
Software-only network observation platform that analyzes traffic from routers, IoT, and industrial controllers where endpoint agents can't run.
Lumeus.ai
A seed-stage San Jose Zero Trust networking startup extending policy enforcement to AI coding agents, acquired by Fiddler…
Cymbel
A Boston-area IT security integrator specializing in Zero Trust network architecture design, deployment, and managed SOC services built…
Enclave Networks
Enclave Networks is a UK-based startup offering zero trust network access as a lightweight VPN replacement, aimed primarily…
Agari
Identity-based email security engine, now operating as Fortra's Agari, using machine learning trained on legitimate mail relationships to…
Interface Masters Technologies
Silicon Valley OEM manufacturer of network TAPs, bypass switches, and packet brokers that feed traffic to IPS, IDS,…
APCON
Privately held network packet broker and visibility fabric maker whose IntellaView hardware feeds clean, deduplicated traffic to security…
Mailprotector
MSP-exclusive, white-labeled email security platform (Shield) offering encrypted email, anti-phishing filtering, continuity, and archiving from a single console.
Albarius
Albarius automates firewall policy management and cross-vendor migration with attack path analysis, founded by a former IDF Unit…
Clavister
Publicly traded Swedish network security vendor selling physical and virtualized firewalls, with a customer base concentrated among telecom…
Venustech
Venustech is one of China's oldest and largest network security vendors, built on decades of firewall and intrusion…
GoodAccess
GoodAccess is a European SASE/ZTNA vendor offering secure remote access, cloud, and data-center connectivity that it markets as…
OpenVPN Inc.
OpenVPN Inc. is the commercial company behind the widely used open-source OpenVPN protocol, offering self-hosted (Access Server) and…
FatPipe Networks
FatPipe Networks is a Salt Lake City-based networking pioneer that claims original SD-WAN patents and now sells a…
Orbcom
Porto-based Portuguese cybersecurity, network and managed-services provider (about EUR 15M revenue, about 80 staff); acquired by Nomios in…
Light Rider
Maryland quantum-integration company building quantum-entropy and quantum-LiFi security products, founded by a former U.S. Army cyber officer.
Frenetik
A Maryland startup using a newly patented technique that rotates real cloud identities and resources to mislead attackers…
SonicWall
A firewall and security vendor focused on small and mid-sized businesses, offering subscription-based appliances and a growing cloud-native…
Link22
A Swedish cross-domain secure-communications specialist for defense, 60% acquired by MW Group.
SafeDNS
SafeDNS provides cloud-based DNS filtering that blocks malicious and policy-violating domains at the resolution layer for schools, MSPs,…
Enigmatos
Enigmatos provides cyberattack detection and deep data analysis for connected commercial vehicle fleets, backed by a partnership in…
SCIT Labs
George Mason University spin-out commercializing patented Self-Cleansing Intrusion Tolerance (SCIT) moving-target-defense technology for servers.
redborder
Open-source-based network detection and response platform from Spanish telecom engineering firm Eneo Tecnología, combining NDR, IPS, and SIEM-style…
Plixer
NetFlow and IPFIX-based network detection and response (NDR) platform from Maine, adding AI-powered analytics and DNS-based threat detection…
UM-Labs
UK-based niche vendor that adds a vendor-agnostic security overlay — encryption and authentication — to SIP/VoIP unified communications…
Apozy
A San Francisco-based, Y Combinator-backed browser security startup that uses native browser isolation to block phishing, malware, and…
Endian
Italian UTM firewall and VPN vendor building industrial and IoT security gateways for IT-OT convergence.
BUFFERZONE
Endpoint-native containment and isolation software that traps risky browsing, email, and file activity in a virtual container without…
HopZero
Network-layer data exfiltration prevention startup that uses TCP/IP hop-count (TTL) controls to cap how far sensitive data packets…
NCP engineering
Privately held, BSI-certified German VPN and secure remote-access software vendor founded in 1986, marketed as VPN Software Made…
MailChannels
Vancouver-based outbound spam and abuse filtering vendor for web hosting providers, protecting shared infrastructure IP reputation.
macmon secure
macmon secure, a German Network Access Control and Software-Defined Perimeter vendor, was acquired by industrial networking company Belden…
GigaNetworks
GigaNetworks is a Miami-based value-added reseller and integrator providing enterprise network and security solutions — firewalls, intrusion detection…
NetWolves
NetWolves is a Tampa, Florida-based enterprise IT solutions provider founded in 1998, specializing in managed network services, enterprise…
SEPPmail
A Swiss email-security specialist expanding into human-risk management by acquiring Danish security-awareness-training provider CyberPilot (1,000+ customers) in August…
Shieldworkz
India-based OT and industrial-control cybersecurity vendor providing asset visibility, threat detection, and compliance mapping for critical infrastructure.
ABS Group
The risk-and-assurance subsidiary of the American Bureau of Shipping, adding ICS/OT cybersecurity through RMC Global in 2026.
BlueAlly
A PE-backed national IT solutions provider that acquired Miami security integrator GigaNetworks in August 2026.
Simetry
A 2020-founded Houston managed IoT connectivity provider acquired by Wireless Logic in July 2026.
Ditno
Sydney-based micro-segmentation and Zero Trust governance platform giving organizations a single portal to control server access across on-premises,…
Certes
Long-tenured network encryption specialist whose Layer 4 CryptoFlow technology segments and encrypts sensitive data flows across mixed infrastructure…
Digital Arts Inc.
Publicly traded Japanese security vendor behind the i-FILTER web filtering, m-FILTER email security, and Z-FILTER file encryption product…
EasySec Solutions
An Israeli startup building an OT-native zero-trust platform that enforces device-level access control and end-to-end encryption inside industrial…
Blue Ridge Networks
Long-running zero-trust network cloaking and preemptive segmentation vendor serving government, financial and critical-infrastructure customers since 1997.
AnubisNetworks
Portugal-based threat intelligence and cloud email security provider, now a BitSight subsidiary, originally built for telecom operators to…
Symantec Enterprise Security (Broadcom)
Broadcom's enterprise security portfolio — Symantec Endpoint Security, Data Loss Prevention, and Secure Web Gateway — now run…
Assac Networks
Tel Aviv-based maker of ShieldiT, a mobile anti-tapping and encrypted-communications app for government and defense users, now majority-owned…
MDaemon Technologies
MDaemon Technologies (formerly Alt-N Technologies) is a Grapevine, Texas company that has built email and email security software,…
OpenText AppRiver
MSP-channel secure email gateway, encryption, and Microsoft 365 backup suite, now operating as part of OpenText Cybersecurity following…
Array Networks
Array Networks is a networking hardware and software company providing application delivery controllers, SSL VPN gateways, and web…
Adaptiv Networks
A Canadian cloud-native SD-WAN and SASE vendor for distributed brands, acquired by Scale Computing in February 2026.
HDN (HanDreamnet)
A South Korean network access-layer security hardware vendor (SubGate Security Switch) involved in a 2026 Daekyo CNS transaction.
Cavero Quantum
A Leeds, UK university spin-out building lightweight, quantum-safe encryption and authentication software for SIM cards and constrained IoT…
Qunett
Boston quantum networking hardware company developing entanglement sources, memory modules and optical interconnects for deployable quantum networks.
Myriad360
A New York systems integrator that scaled to roughly $900M in combined revenue through its Advizex acquisition.
Wireless Logic
A PE-backed IoT connectivity provider that acquired Houston-based SIMETRY in 2026.
Accel-KKR
A technology-focused private equity firm leading a continuation fund backing German SME security vendor Securepoint.
LookingPoint
A California networking, security, and cloud integrator acquired by Presidio in July 2026.
Zvelo
Publicly traded (OTC: ZVLO) URL categorization and threat intelligence provider whose data feeds power web filtering and malicious-site…
MailGuard
Australian-owned cloud email security provider offering secure email gateway and integrated cloud email security services since 2001.
Axiom Cyber Solutions
A Las Vegas-based Cybersecurity-as-a-Service vendor bundling a next-generation firewall appliance with 24/7 SOC monitoring for small and midsize…
Extreme Networks
Extreme Networks is a publicly traded enterprise networking vendor whose ExtremeCloud IQ platform bundles network access policy, analytics,…
Network Solutions, Inc.
Network Solutions, Inc. (branded NSI, distinct from the domain registrar of the same name) is Cisco's largest Indiana-based…
PentenAmio
A UK secure-mobility and cyber-defence provider for allied governments that acquired Armour Communications' encryption technology in April 2026…
Everfield
A PE-backed European software roll-up acquiring German OT/ICS anomaly-detection vendor Rhebo in 2026.
RMC Global
An industrial cybersecurity and risk consultancy, now part of ABS Group.
IOvations
A 20-year-old Zero Trust-focused Northeast MSSP acquired by Avance-backed Alchemy Technology Group.
Comodo Group
Long-running New Jersey cybersecurity vendor offering website security, WAF/DDoS, and endpoint protection, whose corporate structure has been muddied…
Silent Circle
End-to-end encrypted enterprise voice, video, and messaging platform from PGP creator Phil Zimmermann's company.
Cloudi-Fi
Cloudi-Fi is a Paris-founded company delivering cloud-based guest Wi-Fi security and compliance for corporations, retailers, and hospitality operators,…
Chimere
A small French ZTNA startup with an on-premises option, acquired by Ekinops in March 2026 to complete its…
CyberSwarm
A San Mateo neuromorphic security chip startup for IoT and edge devices, founded in 2017.
Datalogix (Cork)
A 20-year-old Cork operational-technology security specialist acquired by Ekco in February 2026.
Abile Group
A national-security network and cyber engineering firm acquired by Bluestone-backed Valiant Solutions in February 2026.
Scale Computing
An edge-computing infrastructure vendor extending into SD-WAN/SASE for distributed retail and restaurant chains via its Adaptiv Networks acquisition.
Wontok
A small, self-funded Sydney vendor whose SafeCentral product locks down the OS to create a malware-resistant secure browsing…
BankVault
A small Perth, Australia vendor offering patented remote-browser-isolation products (SafeWindow, WebSafe) that run sensitive online sessions inside disposable…
Cybonet
Haifa-based email and network security vendor (formerly PineApp) selling gateway email protection and lightweight network monitoring to SMBs…
nProtect (INCA Internet)
South Korean endpoint, online-transaction, and game-security vendor best known for its nProtect GameGuard anti-cheat technology and long-running regional…
IronNet
The NSA-director-founded Collective Defense pioneer that went public via SPAC in 2021 and ceased independent operations in February…
SLEEX
A South Korean seed-stage startup fusing lightweight quantum key distribution with AI-driven sensing for underwater and IoT security.
SecureMe2
Netherlands-based vendor of Cyberalarm, an affordable network intrusion-detection and monitoring product built for small and mid-sized organizations.
Blockdos
Long-running Canadian DDoS mitigation provider offering DNS-redirection-based protection for websites, DNS, and email against SMB and mid-market attacks.
Cathedral
A stealth military-cyber startup founded in 2026 that raised $160M at a $1.4B valuation, with no disclosed product.
Private Communications Corp
Sherman, Connecticut-based VPN company (Private WiFi) expanding into enterprise Zero Trust Network Access via its Remote WorkForce ZTNA…
Defence Intelligence
Ottawa, Canada-based small independent DNS security vendor best known for discovering and helping dismantle the Mariposa botnet, now…
Daekyo CNS
The IT arm of Korea's Daekyo education group, entering network security through a 100% acquisition of Handream.net.
Coeo
A Downers Grove, IL managed-network provider recapitalized by Riata Capital and acquiring NetWolves and S-NET.