Emergency warning in error log---robots.txt??

Really unfamiliar with Zen Cart, but while looking through

error-ap1

I discovered this:

[Mon Apr 09 11:32:14 2012] [error] [client 78.47.164.108] mod_security: Warning. Pattern match "^$" at HEADER("ACCEPT") [severity "EMERGENCY"] [hostname "www.aceleathergoods.com"] [uri "/robots.txt"] [unique_id "T4MrLn8AAAEAACrMgY4AAAAN"]

Got my attention, high anxiety level here.

Searched FAQ for [severity "EMERGENCY"], emergency, but didn't get any hits under the security section

How would I go about tracking this down, and what does it mean?

Hope I posted this in correct section, if not please excuse my ignorance.

Thanks,

Jet

[email protected]

That comes from your server's mod_security system, which is managed by your hosting company.
You'll need to talk to them about the things you find in your server's Apache error logs.

DrByte:

That comes from your server's mod_security system, which is managed by your hosting company.
You'll need to talk to them about the things you find in your server's Apache error logs.

Thank you for the direction!

Cheers,

Jet