Anyone know what this means???

There are a zillion entries...the only entries in my security log...Same IP everytime too and I've got that blocked using ipBlocker.

-Date: The date
-Requestor's IP: 71.228.209.23
-Type: Authorization cookie check
-User ID: blank
-User name: blank
-Outcome: Failed
-Addl Info: :deleted

Probably someone tried to log in and couldn't. I just looked on my live test site, my local installs and zp.org. Only one local install had one of these and that was older.

I'm on the latest ZP...I have the IP blocked...hopefully no issues in the future.