Crosslayer Labs GTM brain

Crosslayer Labs monitors internet-facing web infrastructure for organizations exposed to website and API hijacking.

market profile

text: Internet-facing assets and third-party dependencies create exposure across DNS, certificates and web services.
text: A crowded external attack surface management market overlaps with network and API security, so differentiation rests on cross-layer threat correlation and research credentials.

title: CISO or security leader
pains:
- Cannot confidently enumerate externally exposed services and supplier dependencies
- Must justify response readiness for web infrastructure hijacking
title: Security operations or threat intelligence lead
pains:
- Separate network-layer alerts obscure coordinated attacks
- Needs actionable investigation and remediation context
title: Infrastructure security engineer
pains:
- Untracked APIs and external services change faster than manual inventories
- Must detect certificate, DNS and routing issues before they affect users

text: Healthcare providers, cryptocurrency businesses and banks or fintechs relying on customer-facing web infrastructure are explicit targets.
text: Best-fit accounts likely operate multiple internet-facing services or API dependencies and have a dedicated security owner; company size is not published.

text: Discover and monitor the full infrastructure footprint, including third parties.
text: Correlate otherwise disconnected signals to identify threats.
text: Offer research-backed expertise from the certificate security community.

objection: We already have attack surface management.
response: Compare coverage and correlation across infrastructure layers and external dependencies in a security assessment.
objection: How do we trust a young security vendor?
response: Evaluate the team's Princeton network-security research and work on certificate issuance alongside a scoped demonstration.
objection: Will this add more alerts to our queue?
response: Ask for a demonstration of correlated findings, response context and integration with existing workflows.

name: Infoblox
website: https://www.infoblox.com/resources/faqs/infoblox-exposure-management-digital-risk-protection-services-and-external-attack-surface-management/
why: External attack surface discovery and supplier monitoring overlap.
name: Claranet
website: https://www.claranet.com/uk/services/attack-surface-monitoring/
why: Monitors internet-facing infrastructure using DNS, TLS and BGP data.
name: Securin
website: https://www.securin.io/securin-surface
why: Maps and monitors external assets and vendor infrastructure.

text: A company launches public APIs or adds third-party web infrastructure, increasing its external footprint.
text: A fintech or healthcare organization seeks a security assessment after an internet infrastructure exposure.

model: unknown

sales_led

medium

name: Henry Birge-Lee
title: Founder/CEO
role: CEO
bio: I am am innovator in web and network security. I invented Multi-Perspective Issuance Corroboration (MPIC) which now secures every single HTTPS connection. I am currently focusing on building the Crosslayer Labs platform for web resource integrity.
name: Grace Cimaszewski
title: Founder/CTO
role: CTO
bio: I'm a recent PhD graduate from Princeton and security researcher. I've worked with the CA/Browser Forum to turn my research on TLS certificate security into ecosystem-wide requirements which now improve the security of every HTTPS connection you view in your browser. Before starting Crosslayer with my long-time research collaborators, I was a visiting research at Google and Corelight Labs.
name: Prateek Mittal
title: Founder
role: Founder
bio: I am a professor at Princeton University and co-founder of Crosslayer Labs (YC W26). I specialize in the field of cybersecurity/privacy and am the recipient of the ACM Grace Hopper Award. My research has helped secure every single web connection (HTTPS) worldwide and enhanced the security of deployed LLMs (e.g., GPT 3.5 and GPT4V at OpenAI).