Threat researchers from Avast, a company known for digital security and privacy products, have discovered a massive amount of malware infections for people around the world. The researchers say that around 3 million people globally are infected with malware via third-party browser extensions for Instagram, Facebook, Vimeo, and others. Avast researchers say that malware is hidden in at least 28 third-party Google Chrome and Microsoft Edge extensions associated with some of the most popular platforms on the Internet.