Twitter 'learning' about user safety best practice
16 June 2014 Last updated at 06:38 BST
Twitter has told Newsbeat it continues to "learn" about the best way to keep its users safe.
After criticism over high profile cases of abuse, the company admits it faces "new challenges".
"We continue to learn from incidents like that," said Twitter's director of public policy for Europe, Middle East and Africa, Sinead McSweeney.
"If you stop learning, you stop providing a good service to your users."
Ms McSweeney was talking with Newsbeat's technology reporter Johathan Blake.