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Spammers Using Hacked Machines as Decoys

avi33 writes "This Wired story shows a disturbing alliance between hackers [sic] and spammers. Interestingly, they blame part of the alliance on market forces, leading some skilled engineers to the dark side for profit's sake. A Polish firm claims to have control of 450,000 Trojaned systems that it uses to mask the IP addresses of its hosted sites. In other words, you could host your Viagra-peddling site with a company that has a stringent no-spam policy, but a DNS lookup will point to a home user's compromised machine. Not quite bulletproof, but certainly ups the ante in the spam war."

3 of 413 comments (clear)

  1. interesting methodology by fractalus · · Score: 5, Insightful

    It sounds like they run DNS which "load-balances" requests to the spamvertised sites through zombies set up as open proxies. Since the zombies are scattered throughout all IPs, it makes blocking them hard.

    Of course the scumbags know their weak spot is the DNS. Blocking particular domains is easy, and changing the authoritative DNS for a zone takes a while (done that too often). It steps up the spam blacklisting to now require not just refusing mail, but also refusing to talk to certain DNS servers that are known to operate this way. They can move around, but it's harder; I'm not sure if this is better or worse than the current situation.

    Damn spammers.

    --
    People are never as simple as their stereotypes. This applies equally to Christians, Muslims, and Emacs-lovers.
  2. Re:Firewall by loknor · · Score: 5, Informative

    Yes and it is worth the jump backwards in technology to help OS manufacturers continue to pedal sub par product and services that are the real cause of the problem. Attacking a problem at somewhere other than its source has always been such a great way to deal with challenges like this.

    --

    me karma am bad
  3. Re:So much spam it sucks. by Trigun · · Score: 5, Insightful

    Spammers are winning.

    I hate to say it, but they are. They're winning because they play dirty, and we can't stoop down to their level. After two weeks of battling an unusual torrent of spam, I'm ready to torture one of the bastards in a week-long live-webcast to serve as a warning to everyone else. It's time to sink below their level, so we can punch them in the nuts without throwing out our backs!