Twitter Inc. said on Wednesday it would no longer allow people to post identical messages from multiple accounts, cracking down on a tactic that Russian agents and others have allegedly used to make tweets or topics go viral.

The San Francisco-based social network also said it would not allow people to use software to simultaneously perform other actions such as liking or retweeting from multiple accounts.

Twitter, known for freewheeling discussions in short messages, is under pressure from users and Western governments to stem the spread of false news and foreign propaganda, often done with the help of automated accounts known as bots.