Bulgarian authorities have arrested a 20-year-old government contractor in connection with a hack on the country’s national tax agency that involved information about roughly 5 million adults, prosecutors said Wednesday. Prosecutors described the suspect only as “KB,” though Bulgarian media quickly identified him only as Christian Boykov, or Kristian Boykov, a computer specialist from the city of Plovdiv. The Sofia City Prosecutor’s Office described the hacking suspect as a “cyber security expert” who is “involved in testing and auditing information systems,” according to a translation of their announcement. Boykov has been conducting cybersecurity training for the GDOC, a Bulgarian government agency, his lawyers told MediaPool.ng. The arrest is related to the data breach at the National Revenue Agency, whoch announced Monday that an outsider had compromised its systems, prosecutors said. A hacker had contacted local media outlets from a Russian email provider with databases containing millions of rows of Bulgarians’ personal […]

Källa: Bulgaria hacking suspect worked on government cybersecurity before tax agency breach – CyberScoop

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