According to BlockBeats news on May 19, a report from Blue Point Network revealed that the official drivers provided by Shenzhen printing company Procolored contain backdoor programs used to steal cryptocurrency, with data showing that hackers have stolen a total of 9.3 bitcoins.

The cause of infection is the inherent use of USB drives to transfer these drivers, which, after being infected by a backdoor program, are then uploaded to a cloud storage for global users to download.