Twitter has tripled the size of its team handling abuse reports

Social network is also introducing more features to deal with harassment, including impersonation and doxing

When Twitter boss Dick Costolo vowed that his company was ready to "get a lot more aggressive" about tackling harassment on its network, details were thin on the ground. Now Twitter has revealed some of its specific plans.

The company is introducing new tools for its users to report examples of impersonation and doxing - the sharing of "private and confidential information" - while beefing up the size of its team dealing with reports of abuse.

Related: Mary Beard reveals she befriended Twitter trolls following online abuse

"We suck at dealing with abuse and trolls on the platform and we've sucked at it for years. It's no secret and the rest of the world talks about it every day. We lose core user after core user by not addressing simple trolling issues that they face every day.

I'm frankly ashamed of how poorly we've dealt with this issue during my tenure as CEO. It's absurd. There's no excuse for it. I take full responsibility for not being more aggressive on this front. It's nobody else's fault but mine, and it's embarrassing.