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Izar is a Sr. Staff Engineer at Datadog. Previously, he was Head of Security and Principal Security Architect at Squarespace, and before that he has done security stuff at Bridgewater Associates, Autodesk, DellEMC, RSA and a bunch of other places since the 90's. He was a core contributor to SAFECode and a founding contributor to the IEEE Center for Security Design, and has presented extensively on Threat Modeling topics. He co-authored O'Reilly's "Threat Modeling: A Practical Guide for Development Teams" and the Threat Modeling Manifesto. He likes big threat models and long walks on the beach, preferably without walking, sand or sea water.