Next-gen Network Security Startups funded by Y Combinator (YC) 2026

April 2026

Browse 5 of the top Next-gen Network Security startups funded by Y Combinator.

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  • Firezone
    Firezone
    Y Combinator LogoW2022
    Active • 3 employees • Mountain View, CA, USA
    Firezone connects your workforce to the computing resources they need, wherever they are, securely. Unlike traditional VPNs, Firezone uses a least-privileged approach to access control known as Zero Trust Access. Connect your identity provider and define granular policies in minutes, then rejoice in the IT support requests you won't receive due to our lightweight, WireGuard-powered clients which work great on all platforms.
    devsecops
    next-gen-network-security
    b2b
    security
    open-source
  • Netmaker
    Netmaker
    Y Combinator LogoW2022
    Active • 7 employees • Asheville, NC, USA
    Netmaker is an open source virtual networking platform based on WireGuard. With Netmaker, you can bridge, clouds, the edge, IoT devices, and Kubernetes clusters. Netmaker provides the fastest possible virtual networks, with an average speed 10x faster than standard alternatives. Think of Netmaker like your VPC for distributed systems.
    devsecops
    next-gen-network-security
    open-source
    kubernetes
  • Upfort
    Upfort
    Y Combinator LogoS2017
    Active • 38 employees • San Francisco, CA, USA
    Upfort is a leading platform for cyber security and insurance that provides holistic protection from evolving cyber threats. Founded in 2017 to expand global access to cyber resilience, Upfort makes cyber risk easy to manage and simple to insure. Upfort delivers turnkey security proven to proactively mitigate risk and comprehensive cyber insurance from leading insurers. With proprietary data and intelligent automation, Upfort’s AI anticipates risk and streamlines mitigation for hassle-free underwriting. Insurers, brokers, and risk advisors partner with Upfort to offer clients resilience and peace of mind against cyber threats.
    next-gen-network-security
    security
    insurance
    cyber-insurance
  • Teleport
    Teleport
    Y Combinator LogoS2015
    Active • 255 employees • Oakland, CA, USA
    Teleport unifies identities — humans, machines, and AI — with strong identity implementation to speed up engineering, improve resiliency against identity-based attacks, and secure AI in production infrastructure.
    developer-tools
    devsecops
    next-gen-network-security
  • Cryptoseal
    Cryptoseal
    Y Combinator LogoS2011
    Acquired • 3 employees • Mountain View, CA, USA
    CryptoSeal provides Virtual Private Networks (VPNs) as a service.
    cloud-workload-protection
    devsecops
    next-gen-network-security

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