Antigen
Antigen is an AI adversary for the enterprise. It maps, exploits, and secures your attack surface through nightly automated offensive testing and monthly human red team assessments. Every finding is delivered with traces, reproduction steps, and remediation directly in GitHub, Linear, or the Antigen Platform. We work with companies in financial services, healthcare, retail, and government where security is trust. We're backed by Lightspeed, DST Global, and Susa Ventures.
Y Combinator
yc-company-directory #108Antigen is an AI adversary for the enterprise. It maps, exploits, and secures your attack surface through nightly automated offensive testing and monthly human red team assessments. Every finding is delivered with traces, reproduction steps, and remediation directly in GitHub, Linear, or the Antigen Platform. We work with companies in financial services, healthcare, retail, and government where security is trust. We're backed by Lightspeed, DST Global, and Susa Ventures.
sourceAntigen is classified as AI infrastructure from source descriptions and fund-directory context. Similar companies below are ranked from offline product facets and meaningful description overlap; category and source affiliation can only strengthen an existing product match. For lookup-created rows, the profile starts as pending enrichment until deeper source collection runs.
Local clusters rerank extracted product concepts and description terms. The generated graph remains the fallback for sparse descriptions: offline reciprocal product-similarity graph: extracted concepts + description terms + bounded category/affiliation boosts. Minimum fallback score: 0; max competitors: 6.
Companies similar to Antigen
A deterministic local cluster built from offline product facets and meaningful description terms. Category and selected-institution affiliation provide bounded tie-breaks. Open any peer to continue exploring its cluster.
Intellect
match 82Intellect is the global leader in hyperlocalised mental healthcare, serving 4 million lives across enterprise employers, insurers, healthcare systems, and governments in over 50 languages and 100 countries. With a comprehensive, AI-powered care ecosystem, Intellect seamlessly integrates digital therapeutics, virtual therapy, high-acuity crisis support, and specialty clinical treatment - delivered through its proprietary digital platforms and directly owned mental health clinics. Headquartered in
shared extracted concept terms: healthcare, government, enterprise; shared product terms: enterprise, deliver, directly, healthcare; same category: AI infrastructure; shared affiliation: Y Combinator
Superagent
match 72Superagent helps developers make their AI apps safe. We offer: - Red team testing — specialized attack agents probe your production AI for data leaks, harmful outputs, and unwanted actions - Structured reports with findings, evidence, and remediation guidance - A Safety Page to prove it to your customers — use it in sales, procurement reviews, and security questionnaires Built for companies selling AI into enterprises and regulated industries.
shared extracted concept terms: enterprise; shared product terms: enterprise, attack, test, red; shared product theme: security and compliance; shared affiliation: Y Combinator
Oneleet
match 70Oneleet helps companies become secure and compliant through an all-in-one solution that combines automated tools and human expertise. Oneleet has built the second generation of security compliance automation software, providing tools that go beyond what is classically provided for just compliance alone. Tools like a code security scanner, attack-surface management, access reviews and trust portal are all built in. As the most popular, highest rated and most frequently used platform in the YC com
shared product terms: secure, attack, surface, automat; shared product theme: security and compliance; shared affiliation: Y Combinator
Gecko Security
match 65We built Gecko for teams that want to build secure code quickly without wasting time on security tools that don’t deliver results, or relying on one-time human pentests that quickly become outdated. Gecko uses AI to understand how your application should work, simulates relevant attacks to find critical vulnerabilities, and then verifies these vulnerabilities by exploiting them. It also helps you understand the risk of these vulnerabilities and applies a working fix to keep your code secure.
shared product terms: exploit, secure, attack, human; shared product theme: security and compliance; same category: AI infrastructure; shared affiliation: Y Combinator
Post-Quantum
match 61Post-Quantum is a UK-based company specialising in secure communications, authentication, encryption and blockchain. The company offers a modular cyber security toolkit to the financial services, government, and other critical sectors.
shared extracted concepts: financial services, government; shared product terms: secure, financial, government, security; shared product theme: security and compliance
FAIRLY AI
match 36Democratizing safe, secure, and speedy AI across the enterprise
shared extracted concepts: enterprise; shared product terms: secure, enterprise; shared product theme: security and compliance; same category: AI infrastructure