Brussels, 16/10/2013 (Agence Europe) - The US National Security agency (NSA) has had to face criticism since the revelations made by Edward Snowden at the beginning of June and it appears that it has significantly overestimated the number of attacks thwarted in the world thanks to its espionage programmes. Answering questions put to him by the US Senate intelligence committee, NSA Chief Keith Alexander admitted on 15 October that the number of potential attacks that had been outsmarted was...