hacked off

hacked off adj.  [analogous to `pissed off'] Said of
   system administrators who have become annoyed, upset, or touchy
   owing to suspicions that their sites have been or are going to be
   victimized by crackers, or used for inappropriate, technically
   illegal, or even overtly criminal activities.  For example, having
   unreadable files in your home directory called `worm',
   `lockpick', or `goroot' would probably be an effective (as well
   as impressively obvious and stupid) way to get your sysadmin hacked
   off at you.

   It has been pointed out that there is precedent for this usage in
   U.S. Navy slang, in which officers under discipline are sometimes
   said to be "in hack" and one may speak of "hacking off the C.O.".