Am 05.06.2013 13:19, schrieb Νικόλαος Κούρας:
Is there some logging utility i can use next time iam offering root access to 
someone(if i do it) or perhaps logging a normal's account activity?

Short answer: Not for root, no.

Long answer: as I've already said: root can change file contents, or more explicitly _any_ system state, and (s)he can do that at will, and as such you can't ever be sure that what any form of logging is telling you will be the "truth" in some form or another if you've had a malicious root user on your system.

Now: think again why it's such a plain stupid and incredibly bad idea to hand out root credentials to people you shouldn't trust, and why people (like me) keep telling you that you're naive and a fool to even consider handing out root logins.

PS: the same is true for normal logins. You don't know whether some form of privilege escalation exists on your system, so even by handing out supposedly safe non-root accounts, your installation might get compromised due to insecure SUID software or due to privilege escalation bugs in the kernel.

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