North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical SMTP abuse (Re: The FBI tripping over itself again)
> Networks under my control (and more so some I've been called in > to assist) are currently under attack by SMTP dictionary-attackers, > which seems to be reincarnations of the ghosts of GeolistPro. > [ scumbags that are trying to deliver spam, and/or are trying to > learn every possible email address in a given domain, to the > tune of up to 550,000 per attack (there's obviously a lot of > [email protected] scraped from existing spam-lists). It's my belief that some (or all) of this activity is currently instigated by EarthOnline Software, makers of GeoList Pro. This URL is the basis for my suspicions: http://www.earthonline-software.com/targeted-a.html GeoList's "feature" was that it collected regionally targeted lists of e-mail addresses. How can one do that? The only two ways I can think of are dictionary attacks against ISP web servers ( GET /~aaaa) or dictionary attacks against ISP's SMTP servers (RCPT TO: <aaaaa>). The former method would be much less successful, since not all customers will have their own web directories, and not all providers will use the /~ syntax either. Mike P.S. The SMTP abuse listserv is still here: http://www.kopower.com/mailman/listinfo/smtpabuse
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