German prosecutors have issued an arrest warrant for a Russian hacker accused of breaching the internal network of the Bundestag – the lower house of Parliament in Germany – in 2015, Süddeutsche Zeitung reported. German authorities have not yet publicly confirmed the warrant. German security services believe he was, at the time of the attack, working for the cyber-operations group of the Russian military intelligence service (GRU), in particular with the group known as APT28 or Fancy Bear. Speaking in parliament, German Chancellor Angela Merkel confirmed that her office’s and her own e-mail inboxes were targeted by GRU between 2012 and 2015, BBC reports. Russian Foreign Minister Sergei Lavrov rejected these allegations, stating that no proof was ever provided, the Moscow Times reported. The same hacker is charged in the USA for attacks carried out against the Democratic National Committee (DNC) and the World Anti-Doping Agency (WADA) between 2016 and 2018, and is considered one of the FBI’s most wanted cybercriminals, ZDNet reported.