Founders Capital on LinkedIn · May 2026
Investor spotlight on Hex Security, summarizing the continuous pentesting product, founder backgrounds, and its YC W26 status.
Company research
Public company, workplace, funding, and market signals
Updated Jul 29, 2026
Overview
Hex Security is a YC W26 cybersecurity startup in San Francisco building autonomous AI agents for continuous penetration testing across web apps, APIs, and infrastructure. Its platform returns validated findings with reproduction steps and remediation guidance, and the company says it targets the gap between fast-moving software changes and slow, manual pentests.
Primary product
Autonomous AI-powered continuous penetration testing for web apps, APIs, and infrastructure
Founded
2026
Headquarters
San Francisco, California, United States
Team size
1-10 employees
Industry
Technology, Information and Internet
Sub-industry
Autonomous penetration testing / cybersecurity
Offices
San Francisco, California, United States
Business model
B2B software
security services
Funding
Stage
Seed
Total raised
$125K
Latest round
Seed Round · Mar 2026
Mar 2026
Jan 2026 · Y Combinator
People & investors
Work & culture
Research-driven, security-first, fast-moving, high-ownership, and founder-close; the hiring copy emphasizes shipping quickly, working on hard infrastructure/security problems, and collaborating directly with founders and customers.
Compensation
Public job postings list $130K-$250K for Member of Technical Staff and $130K-$180K for Member of Security Staff, with new grads encouraged to apply.
Product & market
Pricing
sales-led, discovery-call-driven; no public self-serve pricing found
Differentiators
- —Continuous 24/7 AI agents instead of once-a-year manual pentests
- —Validated findings with proof-of-concept reproduction steps
- —Exploit chaining and attack-surface reasoning
- —Designed to reduce false positives and deliver actionable remediation
- —Targets vulnerabilities across web apps, APIs, and infrastructure
- —Positioned as faster and lower-cost than traditional pentesting
Technology
TypeScript
Python
Temporal
Kubernetes
Nomad
sandboxed execution environments
E2B
gVisor
bubblewrap
GCP
AWS
Customers
YC companies
security-conscious startups
mid-market companies
Competitors
manual penetration testing firms
Burp Suite
Nessus
Tenable
Scale & contact
Estimated revenue
about $606K (modeled range $331K-$902K)
Estimated monthly visits
649
Latest news
StartupHub.ai · Apr 2026
Independent analysis of Hex Security's agentic offensive-security product, including a reported ~$1M ARR claim and commentary on market positioning and architecture.
Fondo · Feb 2026
Launch write-up describing Hex Security's continuous AI pentesting product, founder team, exploit discovery claims, and the company's $3B+ potential damages claim.
Y Combinator on LinkedIn · Feb 2026
YC announced Hex Security's launch, describing AI agents that automate pentesting, find critical vulnerabilities in production systems, and have uncovered issues in dozens of companies.
Jobs and careers at Hex Security
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