SAN FRANCISCO -- Twitter has remained mum on why it is one of the top Internet companies not to cooperate with the National Security Agency's clandestine surveillance program PRISM, though it was approached by intelligence officials.
Twitter Chief Executive Dick Costolo did not shed any light on the subject but said Wednesday that Twitter has a "principled" policy on national security data requests and pushes back in some cases to shield the privacy of its users.
Costolo said Twitter would like to reveal more information about data requests from national intelligence officials in solidarity with Google, which is pushing to peel back the layers of secrecy that encompass the program. Google has asked the Foreign Intelligence Surveillance Court to allow the company to speak about the information it is required to provide.
Twitter pushes back on "broad requests" from the government and tries to give users as much disclosure as possible, Costolo said.
"We have been very clear about having … a principled policy around access to user data," Costolo said. "When we receive valid legal requests in countries in which we operate, we will abide by the rule of law … and comply with that legal request."