s5mark VPN installs malware

Researchers at Bitdefender recently discovered adware that's been infecting devices for nearly six years. It's being dubbed Zacinlo and has been targeting Windows machines in the U.S. since 2012. Even though the adware works on most Windows machines, about 90 percent of the infected ones are running Windows 10.

The adware components are secretly installed on the victim's device by a downloader for the free VPN service s5Mark. Zacinlo can also take screenshots and send them to the command and control center for analysis...