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.
Crosslayer Labs is a Y Combinator company in the Winter 2026 batch. Its directory entry describes it as: Protect, monitor and defend your Internet presence. The founders listed are Henry Birge-Lee (Founder/CEO), Grace Cimaszewski (Founder/CTO), Prateek Mittal (Founder) (Y Combinator directory entry, February 9, 2026).
Sell to companies like Crosslayer Labs? Enter your website and see 10 with a filed reason to buy from you this month. Free.
Opens in a new tab. No signup.
New accelerator entry · 2026-02-09 · the record
Pitching, partnering or investing alongside them? See who really runs and owns Crosslayer Labs.
Free to see. No signup.
More on Crosslayer Labs and the records around it.
Get an email when Crosslayer Labs changes status, grows its team or files a funding notice. One email first to confirm; nothing else until you click it. At most one a day, one click to stop. Free for up to 3 companies.
We'll show it in your MentionFox inbox when Crosslayer Labs raises, hires or launches. No email unless you switch it on.
Watch Crosslayer Labs →Get the full cited report on Crosslayer Labs
Example from a real report (our sample on Target): “In March 2026, Target announced a planned incremental $1 billion operating investment” Source: Target Corporation (press release)
A Full Report on Crosslayer Labs: verified, sourced, every claim cited, ready in a few minutes. See pricing.
Saved here on this device in the meantime, so nothing is lost either way.
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.
Founders, titles and bios as the company published them. Photographs are our own copies of the ones on that record, so they do not break when the original link expires.
No investor is drawn from a Form D — the form states how many invested and never who. The one investor on this graph is named because a batch has exactly one.
Example from a real report (our sample on Target): “In March 2026, Target announced a planned incremental $1 billion operating investment” Source: Target Corporation (press release)
A Full Report on Crosslayer Labs: verified, sourced, every claim cited, ready in a few minutes. See pricing.
What the Full Report on Crosslayer Labs covers
Plus the sections for what you are deciding, which you pick after ordering.
A real finished report, first screen. Opens in a new tab.
Not ready to order yet? Keep this snapshot.
Sends this preview to you once; we won't add you to any list
You land back on this company when you are in.
Not ready to upgrade? Keep this one in view instead.
Watchlist Crosslayer LabsYou get an alert in MentionFox the next time this company shows up.
If you're behind Crosslayer Labs: acceptance into a YC batch is one of the few weeks a young company gets looked up by people who matter — investors, other founders, press. FoxPlug turns the commits, deploys, and releases you're already making into that story automatically, so anyone who looks finds something current. GetFoxChat puts a guide on your own site so the people YC's own page just sent you don't read one line and leave.
Sourced from the company's Y Combinator directory entry.
Each opens in a new tab, filled in for Crosslayer Labs. With no account yet, you sign up free and land on the result.
Share the news. Sharing needs no account.
https://mentionfox.com/funding/yc-crosslayer-labs