BREAKING — Corridor closes $25M Series A at a $200M valuation, led by Felicis Founded 2025 by ex-CISA hackers Jack Cable & Ashwin Ramaswami Alex Stamos joins as Chief Security Officer Agent hooks scan every file edit in Cursor & Claude Code Total raised to date: $30.4M Backed by angels from OpenAI, Anthropic & Cursor
Company Dossier · AI Security

Corridor

The security layer that lives inside the coding agent - catching the bug before it's typed.

SAN FRANCISCO, CA FOUNDED 2025 SERIES A ~27 PEOPLE corridor.dev
Corridor - Secure AI Coding at the Source
EXHIBIT A. Corridor's calling card: "Secure AI coding at the source." The whole pitch fits on one line - which, fittingly, is also where it does its work.
The Lede

An AI just wrote 200 lines of code in four seconds. Who's reading them?

Somewhere right now, a developer types a half-sentence into Cursor and a coding agent fills the screen with confident, plausible code. It compiles. It ships. Nobody read every line - nobody can, at that speed. That gap, between how fast code is written and how slowly it is reviewed, is the exact space Corridor decided to stand in.

Corridor is a San Francisco security company building what it calls an Agentic Coding Security Management platform. In plainer terms: it sits inside AI coding tools and watches the code as it is generated, flagging vulnerabilities at the moment of creation rather than weeks later in a frantic audit. Founded in 2025, it has raised $30.4M and recruited one of security's most recognizable names to help. The bet is simple and a little contrarian - that the answer to insecure AI code is not less AI, but security that moves at the same speed.

"Security has to be embedded at the moment code is created, not bolted on later."
— JACK CABLE, CEO & CO-FOUNDER
By The Numbers
$30.4M
TOTAL RAISED
$200M
SERIES A VALUATION
2025
YEAR FOUNDED
~27
EMPLOYEES
The Product

Four ways Corridor gets between you and a breach

The platform does not wait for a pull request to go stale in a review queue. It hooks into the place where code is born and stays there - in the editor, in the agent, in the merge.

Core Platform

ACSM

Agentic Coding Security Management embeds real-time controls directly into AI-driven coding workflows, preventing vulnerabilities as code is generated instead of after it ships.

Real-time

Agent hooks

Hooks scan every file edit as it happens inside tools like Cursor and Claude Code, surfacing insecure patterns before the line is even finished.

In-context

MCP server

A Model Context Protocol server feeds coding agents native security guidance during generation - so the agent writes safer code by default.

At the gate

Automated PR review

A GitHub integration delivers context-rich analysis on every pull request, enforcing guardrails and offering remediation guidance before anything merges.

The People

A government secure-by-design office walks into a startup

Two of the founders cut their teeth at CISA, the federal cybersecurity agency. The third has spent two decades as one of the industry's most quoted security leaders. They met, as these stories tend to go, at Stanford.

Jack Cable
CEO & CO-FOUNDER

Started bug hunting in high school, climbed into HackerOne's top 100, then led the Secure by Design initiative at CISA before co-founding Corridor.

Ashwin Ramaswami
CTO & CO-FOUNDER

Former CISA technologist focused on open source security. Builds the engine that lets Corridor integrate natively with coding agents.

Alex Stamos
CHIEF SECURITY OFFICER

Longtime security heavyweight - formerly of Facebook, Stanford and SentinelOne - who met the founders as Stanford students and joined in 2025.

Follow The Money

From a $5.4M seed to a $200M sticker price in about a year

Seed · Aug 2025
$5.4M
Series A · Mar 2026
$25M

SEED LED BY CONVICTION · SERIES A LED BY FELICIS · $200M POST-MONEY VALUATION

FelicisConviction Lux CapitalDatadog SV AngelTimeless Artisanal VenturesSunflower Capital Angels: OpenAIAnthropic CursorCognition FactoryLovable
"Corridor is building the missing layer for this new era: a security and management system."
JAKE STORM, FELICIS
The Timeline

How it happened

2025
Cable and Ramaswami leave CISA and found Corridor around a secure-by-design thesis for AI code.
AUG 2025
$5.4M seed led by Conviction. Alex Stamos joins as Chief Security Officer; angels include Casey Ellis and Jon Oberheide.
2025 - 2026
Platform launches with agent hooks, an MCP server and automated GitHub PR review.
MAR 2026
$25M Series A led by Felicis at a $200M valuation, with AI-company angels piling in.
Worth Knowing

Things that amuse and inform

  • The CEO ranked among HackerOne's top 100 hackers before he could legally rent a car.
  • Both founders are former CISA technologists - public-interest security alumni turned operators.
  • Some of Corridor's angels come from the very AI labs whose code it secures: OpenAI, Anthropic, Cursor.
  • The product's whole job is to be invisible until the moment it isn't - firing on a single risky file edit.
  • Competitors include Snyk, Semgrep and GitHub's CodeQL, but those mostly read code after the fact.
What You Can Do With It

If your team writes code with AI, this is the seatbelt

For an engineering lead, Corridor means shipping faster without quietly accumulating a backlog of vulnerabilities the agent introduced. For a security team, it means stopping being the bottleneck - guardrails are enforced at generation and at the pull request, with remediation guidance attached. For a developer, it is mostly silence, until a hook politely points out that the snippet just pasted in would have leaked something it shouldn't.

It plugs into the tools teams already use - Cursor, Claude Code, GitHub - rather than asking anyone to change how they work. That is the quiet thesis underneath the funding: security adoption fails when it adds friction, so Corridor tries to add as little as possible.

Watch & Listen

Talks & demos

Video and demo links point to publicly available talks and official Corridor pages.

The Kicker

Back to that 200 lines of code

Return to the developer and the four-second wall of generated code. The difference Corridor is trying to make is small and almost boring: a hook fires, a line gets flagged, a pull request comes back with a note instead of a CVE. The code still ships fast. It just ships with someone - or something - having read it. In an era where the writing is automated, Corridor's whole argument is that the reading should be too.