gag order

See the following -

Microsoft Asks Attorney General To Release Gag Order On NSA Spying

Gregory Ferenstein | TechCrunch | July 16, 2013

Microsoft is tired of getting pummeled in the press over reports that it hands over emails and Skype conversations to the National Security Agency. [...] Read More »

Twitter Breaks Rank, Threatens To Fight NSA Gag Orders

Brendan Sasso | Nextgov | February 6, 2014

Twitter threatened to launch a legal battle with the Obama administration on Thursday over gag orders that prevent it from disclosing information about surveillance of its users. Read More »