The full extent of the U.S. cyber-arsenal is among the most tightly held national security secrets, even more guarded than nuclear capabilities. Because of secrecy concerns, many of the programs remain known only to strictly compartmented groups, a situation that in the past has inhibited the drafting of general policy and specific rules of engagement.
Tomorrow is my "Internet birthday." 8 Feb 94 is the first publicly available evidence that I had access to the Internet. It's manifested in this USENET post.