Guy Tytunovich

Co-Founder and Chief Executive Officer CHEQ

Last Reviewed: September 18, 2026

Executive Summary

Guy Tytunovich is the co-founder and Chief Executive Officer of CHEQ, a Tel Aviv-headquartered cybersecurity company built around a question that has become steadily more expensive to get wrong: is the entity on the other end of this digital interaction a person? CHEQ evaluates traffic, trust and identity signals in real time to separate genuine human visitors from bots, fraudulent actors and, increasingly, autonomous AI agents – and to stop the invalid ones before they consume advertising budget, poison analytics, fill a sales pipeline with fabricated leads or trigger security exposure. The company began in ad fraud and brand safety, a market where the cost of fake traffic was already measurable in billions, and has since broadened into go-to-market security generally. Tytunovich, who came out of Israeli military intelligence, founded it with Ehud Levy and Asaf Botovsky, has raised over $170 million including a $150 million Series C led by Tiger Global, and says the platform is now used by more than 15,000 companies including Fortune 50 brands.

Career Highlights

• Co-founder and CEO of CHEQ, working alongside co-founders Ehud Levy, the company’s President, and Asaf Botovsky, its Chief Technology Officer.
• Raised a $5 million Series A in June 2018, a $16 million Series B in November 2019 from Battery Ventures and MizMaa Ventures, and a $150 million Series C in February 2022 led by Tiger Global.
• Grew CHEQ to a stated 15,000-plus customers spanning startups through to Fortune 50 companies, with offices in Tel Aviv, New York, Tokyo and London.
• Named a World Economic Forum Technology Pioneer in 2021 and included in CNBC’s Upstart 100.
• Moved the company’s positioning from ad fraud and brand safety into go-to-market security, and then into distinguishing human from AI-agent traffic.
• Commissioned research with the University of Baltimore quantifying the global economic cost of ad fraud, fake news and brand safety failures.
• Served in Israeli military intelligence before founding the company.

Professional Journey

Tytunovich’s background is in Israeli military intelligence, the route through which a substantial share of the Israeli cybersecurity industry’s founders arrive. Public sources confirm the service but not the unit, and no unit is claimed here.

He founded CHEQ with Ehud Levy and Asaf Botovsky. The original problem was invalid traffic in digital advertising – bots, click farms and fraudulent impressions absorbing budget intended to reach people, alongside brand safety failures where advertisements appeared against content that damaged the advertiser. Tytunovich’s public argument against the prevailing approach was blunt: keyword blocking and media blacklists were outdated instruments, too crude to distinguish a news report about a disaster from content genuinely hostile to a brand, and incapable of detecting a sophisticated bot at all. CHEQ’s answer was real-time behavioural and semantic analysis of every interaction.

The company invested early in making the scale of the problem legible, partnering with the University of Baltimore on economic studies that put numbers on the annual cost of ad fraud, fake news and brand safety failures to global business – research that gave CHEQ standing in a market where buyers were often unaware of how much they were losing.

The funding record tracks the product’s expansion. A $5 million Series A in June 2018 established the business. A $16 million Series B in November 2019, from Battery Ventures and MizMaa Ventures, funded growth beyond advertising. Then in February 2022 came a $150 million Series C led by Tiger Global, capital that allowed CHEQ to reposition from an ad fraud vendor into a broader go-to-market security platform – protecting analytics, form fills, sales pipelines and customer data from the same invalid traffic that had been corrupting ad spend. Recognition followed alongside: World Economic Forum Technology Pioneer in 2021 and a place on CNBC’s Upstart 100.

The company’s most recent framing reflects a genuine change in the underlying problem rather than a marketing refresh. With AI agents now transacting on the open web on behalf of real people, the binary of human-versus-bot has stopped being adequate; CHEQ now describes itself as the intelligence standard for the human-AI era, combining traffic, trust and identity intelligence so that organizations can decide what a given interaction actually is and how much to trust it. Tytunovich continues to lead the company from Tel Aviv, with offices in New York, Tokyo and London.

Education

No education record could be established. Neither CHEQ’s own site nor any source reviewed states an institution or degree.