Fundraising Fox

Certik

Unicorn · $500B

New York, US · Founded 2018 · Cayman Islands corporation · 15 known investors

CertiK is a Web3 security platform that provides smart contract audits, penetration testing, compliance solutions, and real-time project evaluation for blockchain projects and institutions. It serves Web3 developers, exchanges, wallets, and institutions building distributed ledger technologies.

Also known as CertiK

Founders & leadership

Certik was founded in 2018 by Sergey Gorbunov, Alex Wilke, Ronghui Gu, and Zhong Shao.

SGSergey Gorbunov
Sergey GorbunovCo-Founder
AWAlex Wilke
Alex WilkeCo-Founder
RG
Ronghui GuCo-founder
ZS
Zhong ShaoCo-founder

Board

MZ
Muhan ZouBoard director
KJ
Kai JiangBoard director
TC
Tian ChengBoard directorPartner at Shunwei Capital

Investors · 15

Also in the syndicate · 1

Sequoia Capital Chinalead

Reported raises · per SEC filings

Form D private placements

$233.4M disclosed across 5 of 6 rounds · 2020–2022

$88MraisedMar 2022 · 15 investors · Other
Rule 506(b)
Officers, directors & promoters on the filing
  • Kai JiangDirector
  • Yaxin CaoDirector
  • Tian ChengDirector
  • Hanqing YuDirector
  • Zhong ShaoDirector
  • Muhan ZouDirector
  • Ronghui GuExecutive Officer, Director
Offering amount
$88M
Amount sold
$88M
First sale
Mar 2022
Incorporated
Corporation, Cayman Islands, 2018
Federal exemptions
06b
Full filing on SEC EDGAR ↗
$77.5MraisedDec 2021 · 10 investors · Other
Rule 506(b)
Officers, directors & promoters on the filing
  • Muhan ZouDirector
  • Tian ChengDirector
  • Kai JiangDirector
  • Hanqing YuDirector
  • Yaxin CaoDirector
  • Ronghui GuExecutive Officer, Director
  • Zhong ShaoDirector
Offering amount
$77.5M
Amount sold
$77.5M
First sale
Nov 2021
Incorporated
Corporation, Cayman Islands, 2018
Federal exemptions
06b
Full filing on SEC EDGAR ↗
$23.8MraisedAug 2021 · 8 investors · Other
Rule 506(b)
Officers, directors & promoters on the filing
  • Kai JiangDirector
  • Ronghui GuExecutive Officer, Director
  • Muhan ZouDirector
  • Tian ChengDirector
  • Zhong ShaoDirector
Offering amount
$23.8M
Amount sold
$23.8M
First sale
Aug 2021
Incorporated
Corporation, Cayman Islands, 2018
Federal exemptions
06b
Full filing on SEC EDGAR ↗
$36.9MraisedJul 2021 · 8 investors · Other
Rule 506(b)
Officers, directors & promoters on the filing
  • Muhan ZouDirector
  • Ronghui GuDirector
  • Kai JiangDirector
  • Zhong ShaoDirector
  • Tian ChengDirector
Offering amount
$36.9M
Amount sold
$36.9M
Sales commissions
$600K
Placement agents
Lighthouse Capital International Inc
First sale
Jul 2021
Incorporated
Corporation, Cayman Islands, 2018
Federal exemptions
06b
Full filing on SEC EDGAR ↗
$7.2MraisedJun 2020 · 6 investors · Other
Rule 506(b)
Officers, directors & promoters on the filing
  • Ronghui GuDirector
  • Zhong ShaoDirector
  • Muhan ZouDirector
Offering amount
$8.6M
Amount sold
$7.2M
First sale
Jun 2020
Incorporated
Corporation, Cayman Islands, 2018
Federal exemptions
06b
Full filing on SEC EDGAR ↗

Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.

Valuation · disclosed

Disclosed events
$2Bvaluation at Series B3Apr 2022
filing ↗
$1Bvaluation at Series B2Jan 2022
filing ↗

Source: SEC prospectus filings, and round valuations the company or its investors disclosed — follow each entry's link for the claim.

Company profile

researched Aug 2026

CertiK is a blockchain and Web3 security company headquartered in New York. Its offering spans code security audits of smart contracts and blockchain code, penetration testing, distributed ledger technology security solutions for enterprise infrastructure, proof-of-reserves audits, and compliance products including SkyInsights (compliance, AML and risk management), Dubai VARA licensing advisory, and EU DORA/MiCA advisory for crypto-asset service providers. A central product line is Skynet, a 24/7 active-monitoring platform that detects attacks on deployed contracts; Skynet Premium, released alongside the company's Series B+ round, added real-time alerting on live smart contracts and an analytics dashboard for enterprise clients, while the public Security Leaderboard exposes selected Skynet metrics [0][2][3][5].

The company describes itself as combining formal verification with manual audits. Work cited on its site includes formal verification of TON's consensus module, formal verification of HyperEnclave core components (paper accepted at ASPLOS'24), the first formal proof of a zero-knowledge proof VM circuit with Delphinus Lab for zkWasm, an audit of the XLS-30d AMM on the XRP Ledger, an audit of the SEI Protocol prior to mainnet launch, an audit of LINE Blockchain (with CertiK joining as governance member and node validator), and work under an Ethereum Foundation grant on Rocq tactics for zkVMs. CertiK researchers have also been credited in Apple's iOS 17 security update for three kernel vulnerabilities, inducted into Ledger's Hall of Fame, acknowledged by Samsung for mobile blockchain security work, and awarded Sui's top bug bounty of $600,000 for a critical vulnerability [0][2].

Beyond audits, CertiK publishes threat intelligence and market research (e.g., stablecoin threat intelligence, crypto ATM fraud, prediction market reports) and engages in policy work, stating relationships with the U.S. Congress, the Monetary Authority of Singapore, Hong Kong SAR, Seoul and Busan governments, Abu Dhabi Global Market, and Japan's Financial Services Agency, with contributions on stablecoin and Web3 policy [0][2][3].

Founding story

CertiK's company page states it was founded in 2017 by professors from Columbia and Yale and grew out of research at those universities; The Block reports the company as founded in 2018 and based in New York. Co-founder Zhong Shao is the Thomas L. Kempner Professor and chair of computer science at Yale, whose FLINT group developed the CertiKOS operating system; co-founder and CEO Ronghui Gu is an associate professor of computer science at Columbia and a primary designer of CertiKOS and SeKVM [1][4].

Business model

CertiK sells security and compliance services and software to Web3 and institutional clients, including one-off and recurring code audits, penetration testing, proof-of-reserves verification, regulatory advisory, and subscription monitoring via Skynet/Skynet Premium, which includes an enterprise analytics dashboard. The company also operates CertiK Ventures, which makes investments in blockchain projects [0][2][3][5].

Revenue derives from paid security audits and enterprise security/compliance offerings plus booked revenue from the Skynet monitoring platform; CertiK has cited 20x revenue growth over one year (Series B2 announcement) and 12x revenue growth with profits up 3,000x in 2021, without disclosing absolute figures [3][4][5].

Traction

Company site claims 5,500 clients served, $500 billion of market capitalization assessed, 1.8 million monthly Skynet users and over 117,000 vulnerabilities detected. Earlier disclosures show growth over time: over 1,800 audit clients at the Series B2 announcement; over 1,300 enterprise clients, $90 billion of crypto assets protected and 23,000 vulnerabilities detected at the Series B+ announcement; and over 2,500 enterprise clients with more than $300 billion of crypto assets protected as of April 2022. Headcount was about 200 in April 2022 after a 4x annual increase [0][2][3][4][5].

Latest developments

Recent activity documented on the site and in press includes 2026 research on Aptos Confidential APT, Brazilian VASP regulation, DGrid AI routing, a Skynet 2026 Stablecoin Threat Intelligence Report (June 2026) and a Skynet Crypto ATM Fraud Report (March 2026); participation in the United Nations Global Fraud Summit 2026 and U.S. Congressional engagement by CBO Jason Jiang; and media citations of CertiK data on 2026 crypto hack losses ($1.3 billion) and AML enforcement trends. In 2026 CertiK was among security firms tracing funds stolen in the Syndicate Commons Bridge exploit [0][2][3][7].

Full profile — market position, technology, go-to-market, geography, history, risks & controversies

Market position

CertiK positions itself as the largest Web3 security platform and blockchain security auditor, citing 5,500 clients served, $500 billion in market cap assessed, 1.8 million monthly Skynet users and 117,000+ vulnerabilities detected. External recognition includes CB Insights Top 50 Blockchain Companies, World Economic Forum Global Innovator status, SOC 2 Type II compliance and ISO 27001 certification. Its research is frequently cited in mainstream and crypto media on hack losses, AML enforcement and crypto crime trends [0][1][2][7].

Differentiators cited are the academic formal-verification lineage from Columbia and Yale (CertiKOS, DeepSEA) combined with conventional auditing, an end-to-end suite spanning pre-launch audits through continuous on-chain monitoring, AML and incident response, and regulatory advisory for VARA, DORA and MiCA regimes, plus a public transparency layer via Skynet ratings and the Security Leaderboard [0][1][2][5].

Technology

The platform combines formal verification techniques rooted in academic research (CertiKOS, SeKVM, and the DeepSEA language for verified smart contracts) with manual audits, static/dynamic analysis and on-chain monitoring. Skynet provides continuous monitoring and real-time alerts on deployed smart contracts, and the company applies proprietary models and risk scoring (Skynet Rating) across multiple smart contract languages and 130+ blockchains [0][1][2][3][5].

Go-to-market

Direct enterprise sales ("talk to an expert" consultations) supported by published audit results, threat-intelligence and market research reports, a free public Security Leaderboard and Skynet ratings that build funnel awareness, bug-bounty and vulnerability disclosure work with major vendors, conference and media presence, and government/regulator engagement led by executives such as CBO Jason Jiang [0][2][3].

Web3 protocols and projects, exchanges and custodians, enterprises pursuing institutional blockchain adoption, regulators and compliance teams, and security researchers. Named or referenced clients and partners include Aave, Polygon, Terra, OKX, Fireblocks, Bitget Wallet, LINE Blockchain, Sui, TON, SEI Protocol and Samsung [0][2][4].

Geography

Headquartered in New York with a global team and regulatory engagement across the United States, Singapore, Hong Kong, Japan, Abu Dhabi, Korea (Seoul and Busan), Dubai (VARA), the EU (DORA/MiCA) and Brazil [0][1][2][4].

History

CertiK raised three rounds within four months spanning 2021-2022: a Series B, then an $80 million Series B2 led by Sequoia Capital China at a nearly $1 billion valuation that brought total investment to just over $140 million, and an $88 million Series B3 co-led by Insight Partners, Tiger Global and Advent International at a $2 billion valuation, taking total funding past $240 million. A $24 million Series B+ round led by Tiger Global accompanied the launch of Skynet Premium and brought cumulative fundraising above $70 million at that time. During the same period the company scaled headcount fourfold year over year, hired David Tarditi (ex-Microsoft) as VP of Engineering and Monier Jalal as VP of Marketing, and reported roughly 200 employees as of April 2022. A CertiK blog post notes SoftBank invested $60 million in CertiK as part of its Web3 activity [3][4][5].

Risks & controversies

No controversies about CertiK are described in the sources. Contextual risks noted include the company's exposure to crypto market and security-incident cycles and inconsistent founding-year reporting (2017 on CertiK's own about page versus 2018 in The Block's reporting) [1][4].

Compiled by commissioned research from 8 cited public sources — announcements, filings, and press listed under research sources below.

Key figures

latest reported
Audit clientsJan 20221,800 clients
Clients servedJan 20265,500 clients
Crypto assets protectedApr 2022$300B
Enterprise clientsApr 20222,500 clients
HeadcountApr 2022200 employees
Market cap assessedJan 2026$500B
Monthly Skynet usersJan 20261,800,000 users
Security Leaderboard user growthJan 2022Total users grown 2,000%
Skynet booked revenue growthJan 2022Grown 2,300% since end of 2020
Total funding to dateApr 2022$240M
Total fundraising to dateJan 2021$70M
Total investment to dateJan 2022$140M
ValuationJan 2026$2B
Vulnerabilities detectedJan 2026117,000 vulnerabilities

Company-reported or press-reported figures, each dated to when it was claimed — not independently audited.

Timeline · 17

launches, deals, and filings
Jun 2026
Skynet 2026 Stablecoin Threat Intelligence Report

Report examining attacks on stablecoin financial infrastructure and sanctions evasion via the ruble-backed stablecoin A7A5.

source ↗

Mar 2026
Skynet Crypto ATM Fraud Report

source ↗

Jan 2026
CertiK researcher inducted into Ledger Hall of Fame

source ↗

Jan 2026
Recognition in Apple iOS 17 security update

CertiK was credited in Apple's iOS 17 security update for three critical vulnerabilities in the iOS kernel.

source ↗

Jan 2026
Sui top bug bounty of $600k

CertiK earned Sui's top bug bounty for uncovering a critical vulnerability with potential to shut down the network.

$600K source ↗

Jan 2026
Ethereum Foundation grant work on Rocq tactics for zkVMs

Under an Ethereum Foundation grant, CertiK delivered improved Rocq tactics for modular arithmetic and packed integer handling in zkVMs.

source ↗

Jan 2026
LINE Blockchain audit and validator role

CertiK completed a security audit of LINE Blockchain and will join the network as a governance member and node validator.

source ↗

Jan 2026
Partnership with Delphinus Lab on zkWasm security

CertiK completed what it describes as the first formal proof of a zero-knowledge proof VM circuit.

source ↗

Jan 2026
Partnership with OKX on ecosystem security

CertiK and OKX partnered to enhance security across OKX's ecosystem.

source ↗

Feb 2025
CertiK Ventures investment in Zoo Finance

source ↗

Apr 2022
$88M Series B3 at $2B valuation

Co-led by Insight Partners, Tiger Global and Advent International, with Goldman Sachs, Sequoia Capital and Lightspeed Venture Partners participating.

$88M source ↗

Jan 2022
$80M Series B2 at nearly $1B valuation

$80M source ↗

Jan 2022
David Tarditi joins as VP of Engineering

Dr. David Tarditi, previously 16+ years at Microsoft, joined CertiK as Vice President of Engineering.

source ↗

Jan 2022
Monier Jalal joins as VP of Marketing

Monier Jalal, with over 20 years of cybersecurity leadership experience, joined CertiK as Vice President of Marketing.

source ↗

Jan 2022
Release of Skynet 24/7 monitoring platform

CertiK released Skynet, an active-monitoring platform detecting and protecting blockchains against attacks.

source ↗

Jan 2021
$24M Series B+ led by Tiger Global

$24M source ↗

Jan 2021
Launch of Skynet Premium active-monitoring platform

CertiK released Skynet Premium, providing real-time alerts on deployed smart contracts and an enterprise analytics dashboard, alongside its $24M Series B+ round.

source ↗

Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.

Legal entities · 1

corporate structure
CertikCayman Islands

In the news

Research sources · 8

primary sources listed

8 public sources were cited for this profile; the first-party ones are listed here.

Frequently asked questions

What does Certik do?
CertiK is a New York-based Web3 security platform offering smart contract audits, formal verification, monitoring and compliance services.
Who founded Certik?
Certik was founded by Sergey Gorbunov, Alex Wilke, Ronghui Gu, Zhong Shao in 2018.
Who are Certik's investors?
Certik's investors include Candaq Fintech Group, Continue Capital, Eureka Partners, Foothill Ventures, Insight Partners, Lightspeed Venture Partners, Spark Digital Capital, TsingTech Ventures and 6 more.
How much funding has Certik raised?
Certik has disclosed $233.4M raised across 5 of its 6 known rounds.
Where is Certik headquartered?
Certik is headquartered in New York, US.