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Feroot Security

YC W21

Toronto, CA · Founded 2017 · 24 employees · 9 known investors

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Feroot discovers and monitors third-party scripts, tags, and trackers on websites to detect malicious or unwanted code and block threats. The platform helps organizations comply with PCI DSS, HIPAA, GDPR, CCPA, and other regulations while protecting customer data.

CybersecurityEnterprise SoftwareSaaSComplianceSecurityPrivacyCanadaAmerica / CanadaPartly Remote

Founders & leadership· Y Combinator alumni (W21)

Feroot Security was founded in 2017 by Ivan Tsarynny and Vitaliy Lim.

ITIvan Tsarynny
Ivan TsarynnyCEO & Co-founderIvan Tsarynny is CEO and co-founder of Feroot Security, which provides security testing and protection for web application client-side code.
VLVitaliy Lim
Vitaliy LimFounder & CTO

Investors · 9

StoneMill Ventureslisted by StoneMill VenturesWashington · $100K – $1Mvia Michael Sutton · inferred

How we know: the VCSheet dataset · Y Combinator's founder network · Not right? Tell us

True Ventureslisted by True VenturesSan Francisco · $500K – $3M

How we know: True Ventures's portfolio page · a partner's Signal profile · funding news · feroot.com · open dataset · 5k.vc investor directory · Y Combinator's founder network · Not right? Tell us

Y Combinatorlisted by Y CombinatorSan Francisco · $500K

How we know: the Y Combinator directory · funding news · open dataset · 5k.vc investor directory · Not right? Tell us

Andros15 VenturesreportedSeattle

How we know: Y Combinator's founder network · Not right? Tell us

HaystackreportedSan Francisco · $1M – $3M

How we know: Y Combinator's founder network · Not right? Tell us

Industry VenturesreportedSan Francisco · $250K – $50M

How we know: Y Combinator's founder network · Not right? Tell us

Preface VenturesreportedNew York · $750K – $2M

How we know: a partner's Signal profile · funding news · the VCSheet dataset · Y Combinator's founder network · Not right? Tell us

SAV (Scale Asia Ventures)reportedPalo Alto

How we know: Y Combinator's founder network · Not right? Tell us

Funding

SEC filings, press & company announcements

Source: company announcements and press reports — follow each round's link for the claim.

Founder mafia

2 people who came through Feroot Security went on to found or lead other companies.

Oleg RogynskyyInvestorFounded Backstory +2Ivan TsarynnyFounderFounded PostBeyond

Related companies · 10

Stealth WorkerStealth Worker is a marketplace platform connecting cybersecurity professionals with enterprises that need temporary or contract security expertise, including penetration testers, data protection officers, cloud security specialists, and sales engineers. The platform charges employers a management fee while offering freelance workers flexible engagement opportunities to supplement their income.
Cloudflare, Inc.Cloudflare provides a global cloud network platform delivering security, performance, and development services through sixty-plus integrated services including SASE, application security, and full-stack development infrastructure.
PreclusioPreclusio provides compliance software that helps organizations meet privacy law requirements, including GDPR and similar regulations.
Firefox,Mozilla is a global community organization that develops and maintains open-source internet infrastructure, including the Firefox web browser and Thunderbird email client, while advocating for internet openness, privacy, and user control. The organization also invests in responsible technology startups and creates open-source AI tools for developers.
Clearly AIClearly AI automates compliance documentation and reporting for governance, risk, and compliance (GRC) teams managing multiple regulatory frameworks. The platform centralizes evidence collection, audit preparation, and vendor risk management to reduce compliance burden across enterprises.
AccountableAccountable provides a platform that automates HIPAA compliance tasks including policies, training, risk assessments, vendor management, and incident tracking for small and mid-size healthcare organizations such as dental offices, therapy practices, and health tech startups.
BlyssBlyss operates an AI platform that runs machine learning models inside secure enclaves with end-to-end encryption, ensuring user data remains encrypted even during computation. The platform serves developers, enterprises, and organizations seeking to deploy AI features while maintaining strict data confidentiality.
PauboxPaubox offers AI-powered email security that uses generative AI and behavioral analysis to detect and block phishing attacks, executive impersonations, and email-based threats. The platform serves healthcare organizations and other enterprises seeking to protect against sophisticated email attacks while maintaining compliance with data privacy requirements.
TinfoilTinfoil develops secure hardware and systems, with expertise in privacy and security protocols.
ImpervaImperva provides cybersecurity solutions to protect customers from cyberattacks across applications, data, and identities during digital transformation. The company serves enterprise customers including major financial institutions, telecom providers, and Fortune 100 companies.

Companies working in the same space as Feroot Security.

Legal entities · 1

corporate structure
FEROOT SECURITY INC.

In the news

Feroot Security Raises $14M Series A to Scale AI-Powered Compliance Platform Protecting Websites and Applications - Feroot Securityferoot.com · Nov 2025Web Application Security Startup Feroot Banks $11 Million in Seed Funding - Feroot Securityferoot.com · Feb 2022Feroot Security Raises $11 Millionferoot.com · Feb 2022

Frequently asked questions

What does Feroot Security do?
Feroot discovers and monitors third-party scripts, tags, and trackers on websites to detect malicious or unwanted code and block threats. The platform helps organizations comply with PCI DSS, HIPAA, GDPR, CCPA, and other regulations while protecting customer data.
Who founded Feroot Security?
Feroot Security was founded by Ivan Tsarynny, Vitaliy Lim in 2017.
Who are Feroot Security's investors?
Feroot Security's investors include NEXT AI, StoneMill Ventures, True Ventures, Y Combinator, Andros15 Ventures, Haystack, Industry Ventures, Preface Ventures and 1 more.
Where is Feroot Security headquartered?
Feroot Security is headquartered in Toronto, CA.