HackerOne
HackerOne is a San Francisco-based cybersecurity company founded in 2012 that pioneered bug bounty and coordinated vulnerability disclosure.
About
HackerOne is a San Francisco-based cybersecurity company founded in 2012 that pioneered bug bounty and coordinated vulnerability disclosure. Leveraging one of the world's largest ethical hacker communities, it provides bug bounty, pentesting, vulnerability disclosure management and code security review to enterprises and governments, and has added the GenAI copilot Hai and AI Red Teaming services.
Capital graph
Founders / team· 5
Comparable companies· by market
This company
BusinessLatest roundTotal raisedDate- HackerOne
HackerOne is a San Francisco-based cybersecurity company founded in 2012 that pioneered bug bounty and coordinated vulnerability disclosure. Leveraging one of the world's largest ethical hacker communities, it provides bug bounty, pentesting, vulnerability disclosure management and code security review to enterprises and governments, and has added the GenAI copilot Hai and AI Red Teaming services.
$160M
$160M
United States
BusinessLatest roundTotal raisedDate- Horizon3.ai
Autonomous penetration testing and attack path validation platform NodeZero (AI Hacker), which helps customers continuously find and fix exploitable security weaknesses before attackers exploit them.
Series D+ · $429M · 2026-08 · Valuation $2.0B
$429MValuation $2.0B - Cinder
Cinder is a trust & safety operations platform founded by former Meta security, counterterrorism and policy leaders. It unifies case management, investigations, policy enforcement and content moderation, and uses AI agents to screen prompts and AI outputs, automate most moderation decisions and red-team models; customers include OpenAI, Character.AI, Midjourney and ElevenLabs.
$55M
$55M - Cracken
AI offensive security platform: AI penetration testing, adversarial exposure validation, full kill-chain attack simulation and Cybergraph asset discovery; open-source Project Blacksea (AI attacker honeypot) and RedlineBench (benchmark for AI offensive security capabilities).
$5M
$5M
Europe
BusinessLatest roundTotal raisedDate- Hadrian
Offensive security platform using AI agents to continuously map external attack surfaces and automatically validate exploitable vulnerabilities
Undisclosed · $65M · 2026-10
$65M - Equixly
AI-driven "offensive" API penetration testing and security validation
Series A · $13M · 2025-12
$13M - CodeWall
Autonomous AI penetration testing and offensive security
Pre-Seed · 2026-10
—
Other / unspecified
BusinessLatest roundTotal raisedDate- Xbow
Autonomous AI penetration testing platform that uses LLM-driven attack agents to automatically discover and validate software vulnerabilities
Series C · $270M · 2026-05 · Valuation $1.0B
$270MValuation $1.0B - Novee
Uses AI agents for continuous penetration testing, simulating attacker tactics
Seed · $300M · 2026-01
$300M - Tenzai
Autonomous AI penetration testing platform for enterprises
Seed · $75M · 2025-11
$75M
Confirmed rounds only. Matched on subsector, sector, stage and funding scale — each verifiable on the company profiles.
Investors that may fit
Y Combinator
23 Security & Compliance deals in the last 24 months · 21 in Silicon Valley
Request intro →Andreessen Horowitz
18 Security & Compliance deals in the last 24 months · 16 in Silicon Valley
Request intro →Cyberstarts
18 Security & Compliance deals in the last 24 months · 14 in Silicon Valley
Request intro →Greylock Partners
14 Security & Compliance deals in the last 24 months · 12 in Silicon Valley
Request intro →Ten Eleven Ventures
14 Security & Compliance deals in the last 24 months · 7 in Silicon Valley
Request intro →Ranked by each firm’s deals in this sector over the last 24 months, weighted by nearby stage and shared geography. Indicative only — no rating judgment.