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Re: I Got Hacked. Now What Do I Do?
From: Troels Bay <troelsbay () troelsbay dk>
Date: Wed, 19 May 2004 14:26:35 +0200

Wow, that's pretty amazing.

Now one can't trust somewhat 50% of all Microsoft Computers.

That's rather fun, wouldn't you say?

On May 19, 2004, at 14:11, A.H. wrote:

By Jesper M. Johansson, Ph.D., CISSP, MCSE, MCP+I
Security Program Manager
Microsoft Corporation:

You can’t clean a compromised system by using some “vulnerability remover.” Let’s say you had a system hit by Blaster. A number of vendors (including Microsoft) published vulnerability removers for Blaster. Can you trust a system that had Blaster after the tool is run? I wouldn’t. If the system was vulnerable to Blaster, it was also
 vulnerable to a number of other attacks. Can you guarantee that none
 of those have been run against it? I didn’t think so.

You can’t trust any data copied from a compromised system. Once an
attacker gets into a system, all the data on it may be modified. In
the best-case scenario, copying data off a compromised system and
putting it on a clean system will give you potentially untrustworthy
data. In the worst-case scenario, you may actually have copied a back
door hidden in the data.


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Full-Disclosure - We believe in it.
Charter: http://lists.netsys.com/full-disclosure-charter.html

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