Yossi Naar is an Israeli cybersecurity expert, tech executive, and entrepreneur renowned for his contributions to endpoint detection and response technologies. He co-founded Cybereason in 2012 alongside Yuval Steinberg and Lior Div, serving as the company's Chief Business Officer, and previously as its Chief Product and Technology Officer (CPTO), Chief Product Officer, and President. Naar's expertise spans research and development—particularly in behavioral analytics and proactive cyber threat hunting—as well as sales and business development, with a focus on threat intelligence and operations. Prior to Cybereason, he gained significant experience in Israel's elite intelligence unit, Unit 8200 of the Israel Defense Forces (IDF), where he focused on cyber threats, threat intelligence, and signal intelligence operations. His military background, common among Israeli tech entrepreneurs, equipped him with deep insights into advanced persistent threats and defensive cybersecurity strategies. Under Naar's leadership at Cybereason, the company has grown into a global leader in cybersecurity, providing solutions that mimic human immune systems to detect and respond to malware and attacks in real-time. Headquartered in Boston, Massachusetts, with significant operations in Israel, Cybereason has raised substantial venture capital and serves major enterprises worldwide. Naar's role involved overseeing business development and product innovation, ensuring the platform's evolution to counter sophisticated cyber risks from nation-states and criminal organizations. He has been instrumental in developing Cybereason's flagship XDR (Extended Detection and Response) platform, which integrates endpoint, network, and cloud security. Naar's professional network includes close collaboration with co-founder Yuval Steinberg, with whom he shares institutional affiliations through Cybereason. His work emphasizes the intersection of military-grade intelligence and commercial technology, positioning him as a key figure in the 'Israeli cybersecurity mafia' – a term for the influential alumni of Unit 8200 who have founded numerous successful startups. Naar frequently speaks at industry conferences on topics like AI-driven threat detection and the future of cybersecurity, underscoring his thought leadership in the field.