Crosslayer Labs
YC W26 · Active · Protect, monitor and defend your Internet presence
Competitors
| Company | Category | Status | Program |
|---|---|---|---|
 Wild MooseShared: cause analysis, root causeActiveAI, Devtools | AI, Devtools | Active | YCW23 |
 ApozyShared: impersonation attack, protect, websiteActiveOther | Other | Active | YCW17 |
Adjacent
| Company | Category | Status | Program |
|---|---|---|---|
 Salt SecurityShared: attack, protect, detectActiveAI | AI | Active | YCW16 |
 Palitronica IncShared: defend, attack, detectActiveOther | Other | Active | YCW22 |
 ChamberShared: cause analysis, root cause, monitorActiveAI, Devtools | AI, Devtools | Active | YCW26 |
 SeelozShared: cause analysis, root cause, monitorNot statedAI | AI | Not stated | 500 Global2018 |
 XeolShared: attack, remediation, dependencyAcquiredAI | AI | Acquired | YCS23 |
Also from W26 in Developer tools
All of W26| Company | Category | Status |
|---|---|---|
 Autumn AIEverything on anyone.ActiveDevtools | Devtools | Active |
 CascadeDistilling Proprietary IntelligenceActiveDevtools | Devtools | Active |
 FernRL environments for robotics companiesActiveDevtools | Devtools | Active |
 Klaus AIFast and Safe OpenClaw on the cloudActiveDevtools | Devtools | Active |
 REV1Claude Code for Mechanical EngineersActiveDevtools | Devtools | Active |
 shortkitMedia infra for consumer appsActiveDevtools | Devtools | Active |
Founders
- Henry Birge-LeeFounder/CEO
- Grace CimaszewskiFounder/CTO
- Prateek MittalFounder
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.
- YC batch
- W26 · Winter 2026
- Status, per YC
- Active
- Category
- Developer tools
- Team size
- 3
- Location
- New York City, NY, USA
- Founded
- 2025
- Checked
- 1h ago
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.
Sources: each program's public company list, read twice a week. Not affiliated with Y Combinator or any other program. Logos via logo.dev; trademarks belong to their owners.