Cristian Hesselman

Dr. Cristian Hesselman


Cristian Hesselman directs SIDN Labs, the research team of the operator of the Netherlands’ national top-level domain, .nl. Cristian’s research interests include DNS resilience management, DNS abuse mitigation, IoT security, collaborative security, Internet evolution, and open programmable networks. He is a member of SIDN’s leadership team, member of the Security and Stability Advisory Committee at ICANN, a part-time associate professor at the University of Twente, and chair of the board of directors of NLnet Labs. Cristian holds a Ph.D. (2005) and an M.Sc. (1996) in Computer Science from the University of Twente, the Netherlands. Company site: and Personal site: