The company announced (PDF link) to investors that Costolo will step down effective July 1, with co-founder and chairman Jack Dorsey to serve as interim CEO while Twitter's board searches for a suitable replacement.
As of Saturday, account information for Twitter users outside the U.S. is handled by Twitter International in Dublin, Ireland. This means that all account information will be subject to Irish privacy and data protection law, which is based on the European Union’s Data Protection Directive, Twitter said on its site.
Twitter has tripled the size of its abuse support team after the number of reports it handled increased five-fold in six months thanks to an expansion of harassment controls.
The company did not specify the headcount increase, nor the number of reports. El Reg has requested the information.
Twitter is suing the U.S. government in an effort to loosen restrictions on what the social media giant can say publicly about the national security-related requests it receives for user data.
The company filed a lawsuit against the Justice Department on Monday in a federal court in northern California, arguing that its First Amendment rights are being violated by restrictions that forbid the disclosure of how many national security letters and Foreign Intelligence Surveillance Act court orders it receives -- even if that number is zero.
After nearly six years, TwitPic is shutting down its service amidst pressure from Twitter's legal team. The service has worked in conjunction with Twitter for several years providing hosting services for images and videos.
According to a blog post by TwitPic creator Noah Everett, Twitter contacted his company a few weeks ago in regards to a trademark that was filed for his company that has been pending since 2009. The Twitter legal team demanded they abandon the trademark or risk losing access to the Twitter API.