After a long period of dormancy, the Chinese hacker group FamousSparrow is active again. According to the IT security company ESET, the group has become increasingly dangerous and has deployed new, sophisticated espionage tools.

The German software provider TeamViewer claims to have been the victim of a cyberattack. On Wednesday, TeamViewer's security team detected an "anomaly" in the internal IT environment, TecDax announced on its website.