Facebook said Thursday that a China-based malware campaign named SilentFade targeted its ad platform. The attackers were able to place fraudulent ads using compromised Facebook and Instagram accounts and remain undetected. Facebook fixed the security bug in its platform in 2019.

More:

• Facebook sued the alleged perpetrators, Hong Kong-based ILikeAd Media International Company and its employees Chen Xiao Cong and Huang Tao, in a California court last year.
• The attackers ran fraudulent drug ads and spam with fake celebrity endorsements. 
• Facebook researchers warned that other attackers are likely to employ similar techniques on social media platforms.