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YC Security Companies

131 Y Combinator security startups with verified founder contacts, batch info, and company data.

131

Companies

108

Active

Acquired

Public

YC Company Directory

50 companies

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Company	Batch	Description	Status	Location	Team	Founders	Reveal
Variance	W23	AI Agents for Fraud Review and Investigations	Active	San Francisco, CA, USA	8	Karine Mellata, Michael Lin	Reveal
Agency	W22	Agency replaces traditional security and compliance headcount with AI.	Active	New York City, NY, USA	50	Amir Tarighat, Tyler Carbone	Reveal
Bunkyr	W22	Zero-Knowledge security without seed phrases or backup codes	Active	Denver, CO, USA	3	Michael Brzozowski	Reveal
Cinder	W22	Infrastructure to protect companies from AI abuse	Active	New York City, NY, USA	30	Glen Wise, Phil Brennan	Reveal
Firezone	W22	Easiest, most secure way to set up Zero Trust Access for your team	Active	Mountain View, CA, USA	3	Jamil Bou Kheir	Reveal
Firezone	W22	Easiest way to set up Zero Trust Access for your team	Active	San Francisco, CA, USA	3	Jamil Bou Kheir, Jamil Bou Kheir	Reveal
JumpWire	W22	Dynamic access controls for all data and databases	Acquired	New York, NY, USA	2	Ryan Cooke	Reveal
Munily	W22	Access control management app for Latam´s gated communities	Active	Panama City, Panama, Panama; Remote	30	Marwa Hage, Khaled Alhaj, Mitchell Contreras, carlos de la guardia, Carlos de la Guardia	Reveal
Munily	W22	Access control management app for Latam´s gated communities	Active	Panama City, Panama	30	Marwa Hage, Khaled Alhaj, Mitchell Contreras, carlos de la guardia	Reveal
Optery	W22	Opt out software that removes your private info from the internet	Active	San Francisco, CA, USA; Remote	55	Lawrence Gentilello, Chen Atlas	Reveal
Optery	W22	Opt out software that removes your private info from the internet	Active	San Francisco, CA, USA	55	Lawrence Gentilello, Chen Atlas	Reveal
Palitronica Inc	W22	Detect cyber attacks on critical physical infrastructure	Active	Kitchener, ON, Canada; Remote	6	Sebastian Fischmeister, Carlos Moreno	Reveal
Reality Defender	W22	Enterprise Deepfake Detection	Active	New York City, NY, USA	54	Ben Colman, Ali Shahriyari	Reveal
Reality Defender	W22	Enterprise Deepfake Detection	Active	New York, NY, USA	54	Ben Colman	Reveal
Strac	W22	Data Discovery, DLP, DSPM for SaaS, Cloud, Gen AI & Endpoints	Active	Bellevue, WA, USA	8	Aatish Mandelecha	Reveal
Strac	W22	Data Discovery, DLP, DSPM for SaaS, Cloud, Gen AI & Endpoints	Active	Seattle, WA, USA	8	Aatish Mandelecha	Reveal
Cyble	W21	Cyble - World’s First Intelligence-Driven, AI-Native Security…	Active	San Francisco, CA, USA	197	Beenu Arora, Manish Chachada	Reveal
Feroot Security	W21	AI-powered Compliance Platform for PCI 4, CCPA, HIPAA, CIPA, 50+ laws	Active	Toronto, ON, Canada	24	Ivan Tsarynny, Vitaliy Lim	Reveal
Feroot Security	W21	AI-powered Compliance Platform for PCI 4, CCPA, HIPAA, CIPA, 50+ laws	Active	Toronto, ON, Canada	24	Ivan Tsarynny, Vitaliy Lim	Reveal
Observa	W21	Catch accidental database exposures before the bad guys	Inactive	—	1	Rob Picard	Reveal
Observa	W21	Catch accidental database exposures before the bad guys	Inactive	Remote	1	Rob Picard	Reveal
Stacksi	W21	Automated Answers to Security Questionnaires	Acquired	Los Angeles, CA, USA	4	Emre Murray Mangir, Joseph Metzinger	Reveal
Riot	W20	Cybersecurity awareness for fast growing companies	Active	Paris, Île-de-France, France	160	Benjamin Netter	Reveal
Skypher	W20	AI agent for Compliance Questionnaires Automation	Active	New York, NY, USA	12	Louis Mutricy, Gaspard de Lacroix	Reveal
Corgea	S23	Corgea finds, and fixes insecure code and packages autonomously.	Active	San Francisco, CA, USA	6	Ahmad Sadeddin	Reveal
Corgea	S23	Corgea finds, and fixes insecure code and packages autonomously.	Active	San Francisco, CA, USA	6	Ahmad Sadeddin	Reveal
Hiro	S23	Agents that handle security work	Active	New York City, NY, USA	2	Ethan Blackburn, Daniel Schofield	Reveal
Metalware	S23	Firmware cybersecurity	Active	San Francisco, CA, USA	4	Ryan Chow, Andrew Nedea	Reveal
Metalware	S23	Firmware cybersecurity	Active	San Francisco, CA, USA	4	Ryan Chow, Andrew Nedea	Reveal
Rimward	S23	Low-false-positive intrusion detection for remote outdoor sites	Active	Paris, Île-de-France, France	1	F-G Fernandez, François-Guillaume Fernandez	Reveal
Roundtable	S23	Proof of Human - invisible human verification	Active	San Francisco, CA, USA	4	Mayank Agrawal, Matt Hardy	Reveal
Xeol	S23	Close your outdated dependency attack vector	Acquired	New York, NY, USA	3	ShiHan Wan	Reveal
Xeol	S23	Close your outdated dependency attack vector	Acquired	New York City, NY, USA	3	ShiHan Wan, Benji Visser	Reveal
Oneleet	S22	YC's most popular security compliance platform (SOC 2, ISO 27001,…	Active	Amsterdam, NH, Netherlands	75	Bryan Onel, Ora Onel	Reveal
Oneleet	S22	YC's most popular security compliance platform (SOC 2, ISO 27001,…	Active	—	50	Bryan Onel, Ora Onel	Reveal
Overwatch	S22	Enterprise software for strategic, risk, and cyber fraud intelligence	Active	New York, NY, USA	5	Arjun Bisen, Zara Perumal	Reveal
Overwatch	S22	Enterprise software for enterprise risk and cyber fraud intelligence	Active	New York City, NY, USA	14	Arjun Bisen, Zara Perumal	Reveal
Cloudanix	S21	Cloud and Container Security Platform	Active	Sunnyvale, CA, USA	8	Sujay Maheshwari	Reveal
ContraForce	S21	Security Delivery Platform to orchestrate AI agents for Service…	Active	McKinney, TX, USA	15	Stanislav Golubchik, Ricky Melendez	Reveal
ContraForce	S21	Security Delivery Platform to orchestrate AI agents for Service…	Active	McKinney, TX, USA; Remote	15	Stanislav Golubchik, Ricky Melendez	Reveal
Hyperbrowser	S21	Web infra for AI agents	Active	San Francisco, CA, USA	4	Shri Sukhani, Akshay Shekhawat	Reveal
idemeum	S21	AI-powered Application Control	Active	Palo Alto, CA, USA	10	Nik Poturnak, Jagjit Sethi	Reveal
Keyri	S21	Secure fraud prevention and authentication platform for developers	Acquired	San Francisco, CA, USA; Remote	5	Zain Azeem, Grant La Count, Saif Malik, Grant La Count	Reveal
Malloc Inc	S21	AI-driven mobile cybersecurity	Active	Nicosia, Nicosia, Cyprus	10	Maria Terzi, Liza Charalambous	Reveal
Telivy	S21	Automate your cyber security risk assessments	Acquired	San Francisco, CA, USA	6	Naren Sathiya, Ben Grosser	Reveal
Telivy	S21	Automate your cyber security risk assessments	Acquired	San Francisco, CA, USA	6	Naren Sathiya	Reveal
Notabene	S20	The Notabene platform is the trust layer for global money movement.	Active	New York City, NY, USA	47	Pelle Braendgaard, Andres Junge, Ania Lipinska, Alice Nawfal	Reveal
SafeBase	S20	Trust Center platform that scales customer security reviews	Acquired	San Francisco, CA, USA; Remote	60	Al Yang, Adar Arnon	Reveal
SafeBase	S20	Trust Center platform that scales customer security reviews	Acquired	San Francisco, CA, USA	60	Al Yang, Adar Arnon	Reveal
SuperTokens	S20	Open source alternative to Auth0 / AWS Cognito / Firebase Auth	Active	San Francisco, CA, USA	10	Advait Ruia	Reveal

Batch Distribution

XX261 XX258 WW267 WW253 WW247 WW2310

Status Breakdown

Active108 Acquired19 Inactive4

Top Locations

San Francisco72 New York City12 New York6 Paris4 Seattle4 Tel Aviv-Yafo3

About YC Security Companies

Y Combinator has funded 131 security companies since its founding in 2005. These startups span from early-stage pre-launch to publicly traded companies, making YC one of the most prolific backers of security innovation globally.

108 of these companies are currently active. 19 have been acquired. VCBacked tracks verified founder contact information, team sizes, and company status for every YC security startup.

Related Industries

B2B3278 Healthcare805 Fintech709 Consumer654 Engineering, Product and Design610 Industrials489 Infrastructure303 Productivity208

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