John Graham-Cumming serves on Cloudflare’s board after retiring as its CTO in March 2025, having helped build its security and network infrastructure. He co-founded Electric Cloud, created the POPFile email filter, and writes and builds open-source software.
John Graham-Cumming serves on Cloudflare’s board after retiring as its CTO in March 2025, having helped build its security and network infrastructure. He co-founded Electric Cloud, created the POPFile email filter, and writes and builds open-source software.
Career
Board Member at Cloudflare from 2025-03 to PresentCosigns Received
Matthew Prince 🌥Co-founder and CEO at Cloudflare
John brings deep technical knowledge and intimately knows our business