Israeli cybersecurity startup Tenzai has raised $75 million in a seed funding round — the largest ever for an early-stage company in this sector.
The funding round was led by Greylock Partners, Lux Capital, and Battery Ventures, with additional support from Swish Ventures and several well-known angel investors.
Tenzai is focusing on a new area in cybersecurity — protecting business software from security risks caused by AI-generated code.
Since major tech companies report that over 30% of new code is now written by AI and businesses release updates several times a day, traditional security testing methods can no longer keep up.
Tenzai has created an AI-powered platform that can automatically find, exploit, and fix security weaknesses as quickly as AI creates them.
Unlike traditional penetration testing, which is done manually and only at certain times, Tenzai’s system runs continuously, offering constant and automated protection.
“Pentesting hasn’t changed much since I was a pentester in high school some 25 years ago,” said Pavel Gurvich, co-founder and CEO of Tenzai. “Back then the work was episodic and manual. Today, AI allows us to bring elite, nation-grade offensive capabilities at a scale and speed that were previously impossible. In large enterprises with hundreds of applications that change daily, providing real security assurance is only possible with autonomous AI that can find and fix vulnerabilities at enterprise scale. That’s why we built Tenzai – to bring always-on offensive capabilities so organizations can move fast and stay secure.”
Tenzai was founded by Pavel Gurvich, Ariel Zeitlin, Ofri Ziv, Itamar Tal, and Aner Mazur. Gurvich and Zeitlin had earlier co-founded Guardicore, which Akamai acquired in 2021 for $600 million.
Ziv and Tal were part of Guardicore’s original team, while Mazur was the founding Chief Product Officer at Snyk. Together, the founders have strong experience in offensive cybersecurity from military intelligence and top security organizations.
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