EVE Online released a patch today fixing the so-called "boomerang exploit."
CCP considered it an official and actionable game exploit to avoid CONCORD retaliation in high-security space by attacking a target right after the aggressor warps away or within the same grid in which the player earned a Global Criminal Countdown. Those who used the exploit prior to the fix could have found themselves dealing with a much scarier force than CONCORD: game masters themselves. Now, any player with a GCC will simply be unable to warp away.
Other than keeping boomerangs in the hands of kangaroos where they belong, Crucible patch 1.6.3 contains a few localization fixes, the ability to add a station as a waypoint or destination through the API, and some pesky client crashing issues.