The US' National Security Agency chief has reportedly claimed that the nation's offensive cyber military capacity is the best in the world.
Gen. Keith Alexander said that the US maintains a 'deep, persistent and pervasive presence on adversary computer networks'.
According to Washington Times, Gen. Alexander's testimony comes in light of the recently exposed secret surveillance programmes of the US government.
The NSA chief further said that the agency analysts through their advanced skills gain access and deep understanding of the adversary networks and when authorised to deliver offensive cyber effects they deliver unparalleled effects against them.
The report added Gen. Alexander saying that the US cybermission forces would be trained over the next three years to perform world-class offensive and defensive cyber operations.