An anonymous reader shares a report from The Wall Street Journal (Warning: source may be paywalled; alternative source): German authorities said on Wednesday they were investigating a security breach of the government's highly protected computer network. The country's intelligence agencies were examining attacks on more than one government ministry, the interior ministry said, adding that the affected departments had been informed and that the attack had been isolated and brought under control. Earlier on Wednesday, the German news agency DPA reported that German security services had discovered a breach of the government's IT network in December and traced it back to state-sponsored Russian hackers. German companies have been the target of sustained attacks by state-sponsored hackers, mainly believed to be Chinese. In 2015, the Bundestag, parliament's lower house, suffered a extensive breach, leading to the theft of several gigabytes of data by what German security officials believe were Russian cyberthieves. Hackers believed to be part of the Russia-linked APT28 group sought to infiltrate the computer systems of several German political parties in 2016, Germany's domestic intelligence agency said in 2016.