The IPT is already considering a number of related submissions. Later this month it will investigate complaints by human rights groups about the way social media sites have been targeted by GCHQ.The government has defended the security services, pointing out that online searches are often routed overseas and those deemed "external communications" can be monitored without the need for an individual warrant. Critics say that such a legal interpretation sidesteps the need for traditional intercept safeguards.The latest claim is against both GCHQ, located near Cheltenham, and the Foreign Office. It is based on articles published earlier this year in the German magazine Der Spiegel. That report alleged that GCHQ had carried out an attack, codenamed Operation Socialist, on the Belgian telecoms group, Belgacom, targeting individual employees with "malware (malicious software)".One of the techniques was a "man in the middle" attack, which, according to the documents filed at the IPT, bypasses modern encryption software and "operates by interposing the attacker [GCHQ] between two computers that believe that they are securely communicating with each other. In fact, each is communicating with GCHQ, who collect the communications, as well as relaying them in the hope that the interference will be undetected."The complaint alleges that the attacks were a breach of the Computer Misuse Act 1990 and an interference with the privacy rights of the employees under the European convention of human rights.