British intelligence agency GCHQ created fake LinkedIn and Slashdot pages to spy on Belgacom network engineers. GCHQ reportedly used a method called “FoxAcid” to redirect employees of Belgium’s largest telecommunications company, to fake websites that contained GCHQ. The documents reveal the extent to which spy agencies are able to use mobile communications to track people down and for surveillance. The agency used a spoofed server (codenamed FoxAcid), which can respond faster than the real one, is placed somewhere on the Internet backbone.
Source: https://thehackernews.com/2013/11/snowden-reveals-gchq-planted-malware.html