Crosslayer Labs
Protect, monitor and defend your Internet presence
Founders
- Henry Birge-LeeFounder/CEO
- Grace CimaszewskiFounder/CTO
- Prateek MittalFounder
Same space
Adjacent
Overlapping tags, a different niche.
Browser BuddyW24A recommendation system for the InternetShared: internet, recommendationAcquired
Palitronica IncW22Detect cyber attacks on critical physical infrastructureShared: defend, attackActive
ApozyW17Apozy makes every website safe to browseShared: protect, attack, impersonationActive
Evidently AIS21Open-source monitoring for machine learning modelsShared: standard, monitor, monitoringActive
Also from W26 in Developer tools
Batchmates in Winter 2026.
About Crosslayer Labs
Crosslayer Labs detects impersonation attacks on websites and APIs. We provide "outside-in" monitoring of customer infrastructure, comprehensively discovering and monitoring all Internet dependencies, including DNS, BGP, TLS certs, Javascript. We correlate signals from different layers of the Internet stack to identify attack patterns. Our alerts are actionable and contain root cause analysis/remediation recommendations. Our founding team is world renowned for previously inventing the MPIC standard adopted by all the major CAs including Google, Apple, Amazon. The MPIC standard is securing over 700 million websites via the issuance of over 3 billion digital certificates, and is now a global internet standard that protects every single HTTPS connection.
New York City, NY, USA
Crosslayer Labs: questions
Which YC batch was Crosslayer Labs in?
Crosslayer Labs was in Y Combinator's Winter 2026 batch (W26).
Is Crosslayer Labs still active?
Y Combinator lists Crosslayer Labs as active.
Who founded Crosslayer Labs?
Crosslayer Labs's founders, as listed on its YC page: Henry Birge-Lee (Founder/CEO), Grace Cimaszewski (Founder/CTO), Prateek Mittal (Founder).
Where is Crosslayer Labs based?
Crosslayer Labs lists New York City, NY, USA as its location on YC's directory.
Not affiliated with Y Combinator. From YC's public directory. Logos via logo.dev; trademarks belong to their owners.