Robert Hannigan of GCHQ in FT:
Terrorists have always found ways of hiding their operations. But today mobile technology and smartphones have increased the options available exponentially. Techniques for encrypting messages or making them anonymous which were once the preserve of the most sophisticated criminals or nation states now come as standard. These are supplemented by freely available programs and apps adding extra layers of security, many of them proudly advertising that they are “Snowden approved”. There is no doubt that young foreign fighters have learnt and benefited from the leaks of the past two years.Story.