Indian hack-for-hire firms are impersonating the World Health Organization in spearphishing email campaigns, according to Google.

Hackers that appear to be acting in the interest of China’s government have been hijacking and using fake accounts on Facebook, Twitter, and YouTube, according to Graphika research.

The case again highlights the challenges of mitigating state-sponsored information operations.

The action follows similar steps taken this week by Twitter and Facebook, driven by research from FireEye.

Russian operatives were able to obfuscate their activities by stealing the identities of U.S. citizens, renting servers based in the U.S. and using a VPN all while posting targeted propaganda on social media, according to Robert Mueller's lengthy indictment.