Responding to an outcry in the United Kingdom over online threats against women, Twitter updated its rules against abusive behavior on Saturday.
The social media company revised its rules to clarify that it does "not tolerate abusive behavior."
"We want people to feel safe on Twitter, and we want the Twitter Rules to send a clear message to anyone who thought that such behaviour was, or could ever be, acceptable," Twitter wrote in a blog post.
The move comes after a wave of rape and bomb threats made on Twitter against women political activists and journalists.
More than 120,000 signed a petition on Change.org calling on Twitter to add a abuse reporting button to tweets.