Three years after a devastating breach of U.S. military networks new versions of the malware, known as agent.btz, is still considered a threat. While it’s widely believed that the Russians or Chinese may have created this worm to spy on U.S. military operations, its true origins are unknown to the general public.
What is known is that is continues to morph and reappear in government and non-government systems. These threats are hard to eradicate as the change over time into different forms of malware. For more information check out: http://www.huffingtonpost.com/2011/06/17/agentbtz-worm-attack-military_n_878880.html