[Seemed like a good idea in 2004...
http://www.infosecnews.org/hypermail/0405/8630.html - WK]
By John E. Dunn
18 January 10
Two simple techniques could be used to strangle botnets, a security
expert has claimed. First, block email port 25 by default. Second, tell
users when they are spewing spam from compromised PCs.
According to Trend Micro's CTO, Dave Rand, who is leading a campaign to
reform the way ISPs approach the matter of botnets and spam, the two
countries that adopted such techniques, The Netherlands and Turkey, have
seen a huge reduction in the numbers of botnetted PCs.
According to his own figures and analysis, Turkey went from having
around 1.7 million compromised PCs per month to only 35,000 after
implementing techniques through its major ISP, Turk Telekom.
"They went from the number one spam source in the world to off the
charts, said Rand. "They don't appear in the top 50 now."
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