...damage more quickly than those created in the past. The Code Red worm spread around the world faster than the so-called Morris worm moved through US computers...in 1988, and faster than the Melissa virus in 1999. One primary reason is that intruders are developing better techniques for identifying vulnerable computers...

...more quickly than those created in the past and are spreading to the most vulnerable of all systems, computer systems of home users. The Code Red worm spread around the world faster in 2001 than the Melissa virus did in 1999. Just months later, the NIMDA worm caused serious damage within an hour of...