Roey Ben Chaim

Roey Ben Chaim is an engineer focused on AI and agent security, with a particular interest in how agentic systems fail in practice. His work centers on stress-testing agents, building benchmarks for long-horizon behavior, and developing practical defenses against risks such as prompt injection, unsafe tool use, privacy leakage, and adversarial workflows. Prior to this, he spent a decade at Microsoft building large-scale security systems. He is a co-author of SkillsBench, a benchmark on agent skills efficacy over diverse tasks, and contributes to safety and privacy tooling, including Presidio. Roey is also a speaker on agentic systems and AI security, a co-organizer of AI Tinkerers Tel Aviv, and an active participant in hackathons and builder communities, where he explores emerging systems through hands-on experimentation.