The Spread of the Sapphire/Slammer Worm. "The Sapphire Worm was the fastest computer worm in history. As it began spreading throughout the Internet, it doubled in size every 8.5 seconds. It infected more than 90 percent of vulnerable hosts within 10 minutes. ... Worm defenses need to be automatic; there is no conceivable way for system administrators to respond to threats of this speed." [
Hack the Planet]
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