Detecting Simultaneous Sessions

[Warme1980]

I have an inhouse written app that outputs an audit log in the form of:

DateTime,Username,Activity,SessionID

So I'll get:

01:01:01,Fred001,Logon,001
01:01:02,Fred001,TakeOverWorld,001
01:01:03,Fred001,Logon,002
01:01:04,Fred001,Logoff,001
01:01:05,Fred001,DestroyWorld,002
01:01:06,Fred001,Logoff,002

Now obviously, aside from taking over the world (which is not against our policies) Fred has shared his password (which is) with someone who destroyed the world (also not explicitly against our policy).

So we need to talk to Fred about his blatant disregard of the simultaneous logon policy.

How do I construct a Splunk query to catch him?

Thanks!

[sundareshr]

Have you tried the concurrency command?

http://docs.splunk.com/Documentation/Splunk/6.2.0/SearchReference/Concurrency

[Warme1980]

Hrm, that might be the thread I need to start tugging on to get to a solution, thanks!