Chris van ’t Hof is an independent researcher, writer and presenter in information technology. With his background in both electrical engineering and sociology, he analyses the interaction between human and electronic networks. His eight book: “Helpful Hackers. How the Dutch do Responsible Disclosure.” His company Tek Tok organises conferences, workshops and IT security training. As Secretary of the Dutch Institute for Vulnerability Disclosure, he helps ethical hackers to clean up the internet for free. He also has his own talk show: Hack Talk.