Tatsuya Sudo, Asahi Shimbun’s senior editor (in charge of cybersecurity) mainly covers Internet crimes, cyber attacks and unauthorized access incidents. In 1994, he joined Asahi Shimbun as a technical engineer. After working in newspaper production and election system development & operations, he switched to journalism in 1999. He worked at the Tokyo Head Office as a member of the domestic affairs and special reports teams before taking his current position in 2016. In 2014, using a program to collect data from Internet-connected devices in Japan, he investigated and reported that data on many web cameras, multifunction printers, and smart home control devices/HEMS were visible to anyone. He also tracked the whereabouts of stolen cryptocurrency on the blockchain in the Coincheck incident (2018), writing a full account of the criminal hack based on internal documents he had obtained.