Security Incidents mailing list archives

Re: .ida Intrusion Attempt


From: "E. Larry Lidz" <ellidz () eridu uchicago edu>
Date: Fri, 20 Jul 2001 08:53:36 -0500


Stuart Staniford writes:
show a sudden dramatic increase in the probe rate earlier this morning
(US time).  This could be consistent with a new version which is
spreading much more effectively (possibly because it seeds its random
number better).  I'm trying to fit this data.

The numbers look, loosely, like a bell curve to me. I'm not a
statistician, but isn't this loosely what we'd expect to see? That as it
compromises more machines it spreads itself asymptotically? And then,
once it hits a certain threshold people take note and start shutting
down the machines doing the attacking?

-Larry

---
E. Larry Lidz                                        Phone: (773)702-2208
Sr. Network Security Officer                         Fax:   (773)702-0559
Network Security Center, The University of Chicago
PGP: http://security.uchicago.edu/centerinfo/pgpkeys.shtml


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