Re: How to tell if I've been hacked?

[Magnus Holmström <magnus.holmstrom@xxxxxxxxx>]

Check for failed logins in /var/log/messages

Check if the /etc/passwd file have been changed

Use commands like last, w and uptime.

2009/8/19 Eduardo Grosclaude <eduardo.grosclaude@xxxxxxxxx>

On Wed, Aug 19, 2009 at 1:57 AM, Bill Campbell<centos@xxxxxxxxxxxxx> wrote:
> You cannot trust tools like ``ps'', ``find'', ``netstat'', and
> ``lsof'' as these are frequently replaced by ones that are
> modified to hide the cracker's work.

As a corollary, the only safe way to audit a suspected system is
booting your diagnostic tool from known good media (eg try a security
Live CD distro)

--
Eduardo Grosclaude
Universidad Nacional del Comahue
Neuquen, Argentina

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