After the terrorist attacks of September 11 , 2001 , the NSA believed that it had public support for a dramatic expansion of its surveillance activities . According to Neal Koblitz and Alfred Menezes , the period when the NSA was a trusted partner with academia and industry in the development of cryptographic standards started to come to an end when , as part of the change in the NSA in the post-September 11 era , Snow was replaced as Technical Director , Jacobs retired , and IAD could no longer effectively oppose proposed actions by the offensive arm of the NSA
terrorist attacks of September 11 , 2001
September 11 attacks
National Security Agency