North American Network Operators Group
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How much do worms and virus cost ISPs?

  • From: Sean Donelan
  • Date: Wed Mar 03 14:59:23 2004 
Of course, I'm certain Sandvine is selling something to solve the
problem, but it is still a very nice article with some measurable
numbers.

http://www.globeandmail.com/servlet/story/RTGAM.20040303.gtsandmar2/BNStory/Technology/

"On any given day," its white paper concluded, "between 2 and 12 per cent
of all Internet traffic moving across service provider networks is
malicious. Even on well-run networks with dedicated security departments,
malicious traffic constitutes, on average, 5 per cent of all data
throughput."

Service provider with about 100,000 subscribers will lose almost $60,000
in avoidable fees. A provider with one million subscribers will pay an
additional $350,000.