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The Slammer worm (also known as the Sapphire worm) was the fastest worm
in history -- it doubled in size every 8.5 seconds at its peak. From
the time it began to infect hosts (around 05:30 UTC) on Saturday,
Jan. 25, 2003, it managed to infect more than 90 percent of the
vulnerable hosts within 10 minutes using a well known vulnerability in
Microsoft's SQL Server. Slammer eventually infected more than 75,000 hosts,
flooded networks all over the world, caused disruptions to financial
institutions, ATMs, and even an election in Canada. Here's a map that
shows how quickly the worm spread over the first half-hour of tracking (Macromedia Flash required).
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The Internet (formerly ARPAnet) grew from a defense and research
institution-based network to a mass of interconnected nodes that are spread all over the
U.S. Many different providers have networks that span the country (and,
for that matter, the globe) but in order for the system to function
effectively these various networks must be connected at some point.
Here is a map showing the general layout of networks in the U.S.
and the "peering points" (i.e. the points at which networks are
connected to each other).
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