What happens when you report abuse on Twitter?
16 June 2014 Last updated at 06:42 BST
Twitter has told Newsbeat it continues to "learn" about the best way to deal with abuse.
Newsbeat was given unique access to Twitter's European HQ in Dublin, to find out how the company tries to keep users safe.
After criticism over high profile cases of abuse, the company admits it faces "new challenges".
Twitter's global head of trust and safety outreach Patricia Cartes explained how reports are dealt with.