Network Security
Firewalls, intrusion detection, network monitoring, segmentation, and secure access.
Securepoint
A nearly 30-year-old German SME security vendor with a 5,800-partner channel, moved into an Accel-KKR-backed continuation fund.
Netgate
Netgate, operating as Rubicon Communications LLC, is the commercial company behind pfSense, the widely used open-source firewall/router platform,…
Hotspot Shield
Hotspot Shield is a consumer VPN product, now owned by digital-safety company Aura, built on the proprietary Catapult…
Zentera Systems
Zentera Systems is a San Jose-based zero trust microsegmentation vendor whose Virtual Chamber and CoIP Platform technology isolates…
Nano Corp
Software-only network observation platform that analyzes traffic from routers, IoT, and industrial controllers where endpoint agents can't run.
HARMAN Automotive Cybersecurity
In-vehicle intrusion detection and prevention division of Samsung-owned HARMAN International, built on the 2016 TowerSec acquisition, protecting automotive…
4Elitech
Spanish specialist in industrial and critical-infrastructure (OT) cybersecurity; acquired by Aiuken Cybersecurity in September 2026.
PacketViper
Pittsburgh-based network security vendor combining active deception with Automated Moving Target Defense in a single agentless appliance for…
Intrusion Inc.
Publicly traded (NASDAQ: INTZ) network security vendor whose Shield product line blocks malicious traffic in real time using…
MON5
Italian OT/industrial cybersecurity startup mapping devices, vulnerabilities, and network anomalies across European critical infrastructure and manufacturing environments.
Threater
Threater (formerly ThreatBlockr, originally Bandura Cyber) automates enforcement of large-scale cyber threat intelligence feeds directly on the network,…
Ultra Cyber Ltd
A 200-plus-staff UK sovereign secure-communications and datalink security firm being acquired by Airbus Defence and Space.
Privafy
Cloud-native security-as-a-service startup bundling firewall, encryption, IDS/IPS, DLP and VPN into a single edge platform for enterprises, telecom…
Gcore
Gcore is a Luxembourg-headquartered edge computing and content delivery company whose global network also delivers DDoS protection and…
Zenarmor
Zenarmor, formerly known as Sunny Valley Networks, sells a single-pass SASE and next-generation firewall software layer that adds…
Aura
A Boston consumer digital-safety suite that acquired Pango (Hotspot Shield) with about $100M of acquisition financing.
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…
Mako Networks
Cloud-managed network security appliances built for PCI DSS compliance across distributed multi-location retail, hospitality, and fuel businesses.
Copia Automation
A New York version-control and recovery platform for PLC and industrial OT code.
Check Point Software Technologies
One of the original firewall vendors, now selling the Quantum NGFW line alongside cloud, endpoint, and SASE products…
SecureCo
Builds stealth and obfuscation technology for data-in-transit protection, aiming to make network connections themselves harder to discover rather…
NetQuest Corporation
Employee-owned New Jersey firm building packet brokers and optical network monitoring hardware that feeds threat-hunting and lawful-intercept systems…
OpenText Bricata
OpenText’s network detection and response (NDR) product line, originally built by Bricata, giving OpenText customers east-west network traffic…
Mailprotector
MSP-exclusive, white-labeled email security platform (Shield) offering encrypted email, anti-phishing filtering, continuity, and archiving from a single console.