Network Security
Firewalls, intrusion detection, network monitoring, segmentation, and secure access.
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 —…
Cylus
Cylus builds network detection and monitoring purpose-built for railway and metro signaling and control systems, backed by rail…
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.
HYAS Infosec
Protective DNS and adversary-infrastructure threat intelligence platform, independently AV-TEST validated to block the majority of malware and phishing…
Everfox
Defense-grade zero trust and cross-domain security vendor, rebranded from Forcepoint Federal to serve government and critical-infrastructure missions.
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…
FireMon
Lenexa, Kansas-based creator of the network security policy management category, unifying firewall and cloud policy across 120+ platforms.
Menlo Security
A Mountain View, California pioneer of cloud-based browser isolation, now positioning itself as a secure enterprise browser platform,…
OneLayer
Tel Aviv-based network security startup securing private LTE/5G cellular networks and connected IoT/OT devices with visibility and zero-trust…
SquareX (now part of Zscaler)
Browser Detection and Response pioneer protecting against malicious extensions, browser-based malware, and identity attacks, acquired by Zscaler in…
NTT Communications Corporation
The global ICT arm of NTT, bundling managed security and SOC services into its worldwide network.
ExtraHop
A network detection and response vendor using cloud-scale machine learning on east-west traffic to spot behavioral anomalies and…
CUJO AI
Network intelligence and cybersecurity platform embedded in ISP and mobile-operator networks, protecting connected devices at massive scale.
NetFoundry
Creator and commercial steward of OpenZiti, an open-source zero-trust networking framework that embeds identity-based access directly into applications…
Mimecast
Established email and collaboration security vendor offering threat protection, insider risk management, and awareness training, taken private by…
OTOPIQ Security
Jersey City OT security firm built on NanoLock's device-protection technology, enforcing zero-trust controls at the industrial device itself.
EfficientIP
Paris-based DDI (DNS-DHCP-IPAM) vendor whose SOLIDserver platform secures DNS infrastructure against exfiltration and DDoS, recently acquired by private…
PQShield
PQShield builds post-quantum cryptography libraries and hardware accelerators, including quantum-resistant TLS/network encryption implementations, to help organizations transition network…
Secturion Systems
An NSA-certified hardware encryption vendor for defense platforms, acquired by Carlyle in July 2026.
TigerByte Cyber
TigerByte Cyber hardens legacy aircraft, satellites, and drones against cyberattacks with plug-and-play, hardware-enforced edge security.
Inky
AI-driven email security vendor known for in-inbox warning banners that coach users on phishing risk, acquired by MSP…