Millions of people may be at risk from a new method of hacking that infects devices with hidden computer viruses in the subtitles of online videos, according to security researchers.

Axar.az reports citing Newsweek.

Cybersecurity firm Check Point found that subtitle files for films and TV shows could be manipulated to allow hackers to take complete control over any type of device via vulnerabilities found in popular streaming platforms, including VLC, Popcorn-Time and Kodi.

“The supply chain for subtitles is complex, with over 25 different subtitle formats in use, all with unique features and capabilities,” says Omri Herscovici, vulnerability research team leader at Check Point, in an email to Newsweek .