Google said Tuesday it has moved to shut down a network of about one million hijacked electronic devices used worldwide to commit online crimes, while also suing Russia-based hackers the tech giant claimed were responsible.

The so-called botnet of infected devices, which was also used to surreptitiously mine bitcoin, was cut off at least for now from the people wielding it on the internet.

“The operators of Glupteba are likely to attempt to regain control of the botnet using a backup command and control mechanism,” wrote Shane Huntley and Luca Nagy from Google’s threat analysis group.