Nachi/Welchia Aftermath
Brent Van Dussen
vandusb at attens.com
Tue Jan 20 22:22:52 UTC 2004
Well folks, since the middle of August I've been tracking the spread and
subsequent efforts by our community to stop the nachia/welchia infection
that took down so many networks.
Sadly, by my estimations, only about 20-30% of infected hosts were
cleaned. After Jan 1, 2004 it appears that the thousands, (millions?) of
remaining infected hosts were rebooted and the worm removed
itself. Network traffic has finally returned to normal.
What kind of effects did everyone see from this devastating worm and what
lessons did we learn for preventing network downtime in the future?
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