Founder Directory
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Founders3
Known for these resultsRole67%Role is parsed from founder titles in yc.db. Known for 67% of these rows — the rest have no title at all, mostly 2019–2023. Those rows stay in the result and are counted as Unknown, never as No.Bio100%Bio coverage: 100% of these founders have a bio on their YC profile. Every bio-derived facet (ex-company, school, credentials, discipline) is Unknown for the rest.Ex-company67%Ex-company is matched from bios with employment context (ex-, formerly, worked at). 67% of these rows have at least one match.School67%School is matched from bios, case-sensitive for acronyms. 67% of these rows have at least one match.
- Grace CimaszewskiFounder/CTO · Crosslayer LabsW26B2B · New York
- Henry Birge-LeeFounder/CEO · Crosslayer LabsW26B2B · New York
- Prateek Mittal@prateekmittal_Founder · Crosslayer LabsW26B2B · New York
FOUNDERROLEBATCHINDUSTRYLOCATIONTEAMX_url
Grace CimaszewskiCrosslayer LabsFounder/CTOWinter 2026B2BNew York, United States3—Henry Birge-LeeCrosslayer LabsFounder/CEOWinter 2026B2BNew York, United States3—Prateek MittalCrosslayer LabsFounderWinter 2026B2BNew York, United States3https://x.com/prateekmittal_
Showing 1–3 of 3 founders
Grace Cimaszewski
Founder/CTO·Crosslayer Labs
PRIMARY INFO
RoleFounder/CTO
Team size3
BatchWinter 2026
LocationNew York, United States
Company statusActive
StageEarly
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.
Ex-company, school and discipline below are derived from this bio. Nothing is inferred when the bio is missing.
BACKGROUND
CredentialsPhD
DisciplineResearcherKeyword match from the bio text, not a classifier.
TRACK RECORD
First YC company on record
COMPANY CONTEXT
Crosslayer LabsProtect, monitor and defend your Internet presence
