John Mattsson

John Mattsson is a seasoned cryptography and security protocol expert at Ericsson Research in Stockholm, bringing almost two decades of hands-on work in applied cryptography, IoT security, privacy, and post-quantum readiness. He has significantly influenced cryptography, Internet, and cellular security standards through active participation in IETF, IRTF, 3GPP, GSMA, and NIST, shaping both protocol design and standardization. Beyond designing new protocols, he has discovered significant attacks on various algorithms and protocols, underscoring a practical, adversarial mindset that strengthens defense. He holds an MSc in Physics/Theoretical Computer Science from KTH and MBAs in International Business and Business Law from Stockholm University, reflecting a rare blend of deep technical and business acumen. Since 2022 he has held the role of Expert in Cryptographic Algorithms and Security Protocols at Ericsson, following a progression from Research Engineer to Senior Specialist in Internet Security Protocols. Based in Stockholm County, his profile combines research rigor with cross-domain leadership, and he actively bridges academic insights with industry-standard practices.