[Dshield] Major Increase in Dictionary Attacks Against MTAs

jayjwa jayjwa at atr2.ath.cx
Tue Dec 30 21:23:11 GMT 2003


On Mon, 29 Dec 2003, Jon R. Kibler wrote:

> Over the past 2 weeks we have observed a major increase in dictionary attacks against our MTAs. Historically, we see an average of a dictionary attack a day, usually occurring in a burst of 3 or 4 in a single day, followed by 3 or 4 days with no such attacks. Recently, we have been observing 2 to 4 attacks in an hour (all within a couple of minutes of each other), then a few hours with no attacks -- averaging about an attack every 2 hours or so.

You sure someone just doesn't have it in for you? We use Sendmail, but
have never seen such a thing.

[jayjwa]






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