Chema Alonso

Spanish executive and hacker

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From Wikipedia

José María "Chema" Alonso Cebrián (born 1975) is a Spanish computer‑security researcher and technology executive. He led Telefónica's cybersecurity unit ElevenPaths in 2013 and later served on the company's executive committee as Chief Data Officer and Chief Digital Officer between 2016 and 2025. In August 2025, Alonso joined Cloudflare as vice president and head of international development. Alonso is a frequent speaker at international security conferences (including Black Hat, DEF CON and Troopers). He has worked on connection-string parameter pollution and has been involved in tools such as the FOCA metadata-analysis suite and the Latch “digital padlock” app.

Text: Wikipédia, CC BY-SA 4.0. · Image: Telefonica Spain (CC BY-SA 4.0) ·