Sen. Mark Warner says the world has entered a new phase of nation-state conflict in which cyberwarfare and information warfare are the primary means through which countries assert their power on the world stage.

The unrelated efforts in Eastern Europe and the Middle East are the latest examples of how the social media giant's reach is exploited.

Twitter also announced it would no longer accept advertising from state-controlled news media.

It's hardly the first time Twitter has been used to amplify questionable narratives.

The plaintiffs say the company knew about the problem with "access tokens" for years and chose to protect its own employees before fixing the problem for users.

“We’re taking down these pages, groups and accounts based on their behavior, not the content they posted,” Facebook’s head of cybersecurity policy said.