Soon after, the two men spoke on the phone, one of them a teenager, the other already a rising figure inside Israeli military intelligence. They talked about Dibrov’s work, his dreams and aspirations, and whether he was in the right military unit. “By the end of that conversation, I knew I wanted him to be part of my unit,” Rappaport said. It wasn’t until Dibrov joined Rappaport’s command that the two men met face-to-face.

Rappaport became Dibrov’s commanding officer. “He would come in the morning with TheMarker, basically Israel’s Wall Street Journal, and we had terrific discussions and fighting about things unrelated to intelligence and computer science and cyber, but talking about business,” he said.

Avishag Shaar-Yashuv

In April 2026, ServiceNow paid $7.75 billion cash for Dibrov’s company, Armis, a platform that monitors every connected device on an enterprise network—medical equipment, industrial systems, or other “internet of things” devices—and then flags the ones that pose a security risk.

It was the largest acquisition in ServiceNow’s history and the second-biggest pure startup exit in Israeli tech ever. (By coincidence, Rappaport holds the top spot with Google’s $32 billion acquisition in 2025 of Wiz, a cloud cybersecurity company.)