Bugtraq mailing list archives

Re: mail storm


From: Albert-Lunde () nwu edu (Albert Lunde)
Date: Mon, 12 Aug 1996 22:55:38 -0500


Imagine a hacker really doesn't like someone, and is willing to do
something disruptive to a lot of other people to spite that one person.
Or imagine that they just want to do something very disruptive.

Imagine the hacker picks 2n mailing lists, subscribing the i'th to the

I've seen this played out on a smaller scale on several lists,
when a bogus auto-reply program, or an exceptionally dumb person,
replied to the list to every message, including a copy of the
previous message in each reply.

This resulted in an exponential growth, though perhaps at a slower
rate than the scheme you outline.

It did put the list in question out of production for up to several days,
till a list admin had time to notice and fix it.

In practice, there did seem in every case to be some (annoyingly large)
maximum volume/per hour beyond which the lists would not run, so
exponential growth only went till saturation was reached. But
I suppose the combination of several out-of-control lists
could bombard one mailbox much faster.

I don't think it is more dangerous than an assortment of other denial
of service attacks, but this doesn't mean we are "safe".



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