In another thread Hugo van der Kooij wrote: > Securing every machine on the internet would be a good start. 95% of all > spam messages I have seen lately gets send from DSL or Cable IP addresses. > These are machine which run spamware without the user knowing (s)he is > sending out spam by the buckets untill their ISP shuts them down.
Really? 95%? Does anyone have sound statistics on how much spam comes from DSL/Cable IP-space? And further, does anyone have any idea how to pick apart how much of that is simply relaying type activity vs.dedicated spam-bot activity? On the first question, I've seen many estimates over the last year or so suggesting everything from 25% (admittedly that was one of the earliest such estimates) to 40% and 60%, and recently a few claims of the "as much as..." variety pegging it at 75% and 80% (don't ask for references -- this is all from memory...). So, has any really good, large-scale sampling of these issues been done, perhaps by the large Email/anti-spam managed services folks?? -- Nick FitzGerald Computer Virus Consulting Ltd. Ph/FAX: +64 3 3529854 _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html
