Facebook has detailed a wide-scale Chinese malware campaign that targeted its ad platform for years and siphoned $4 million from users advertising accounts. The campaign was addressed by the social media s security teams after it first became active. The malware, dubbed SilentFade, stole Facebook credentials and cookies from various browser credential stores, including Internet Explorer, Chromium and Firefox. Facebook shut down the campaign and pursued legal action against the cybercriminals behind the attack in December 2019.
Source: https://threatpost.com/silentfade-attack-facebook/159780/