The GCHQ (British Government Communications Headquarters) used fake LinkedIn and Slashdot to hack Belgacom, OPEC & others GRX providers. The British signals intelligence spy agency has again adopted a quantum insert technique to target employees of two companies that are GRX (Global Roaming Exchange) providers. The companies attacked by intelligence agents are Comfone and Mach, this second one was recently acquired over by Syniverse. The revelation was made by the journalist Laura Poitras accredited as one of the professionals that have access to the documents leaked by Edward Snowden.”]
Source: http://securityaffairs.co/wordpress/19636/hacking/gchq-hacked-grx-providers.html