By fiat. I'm waiting for more detail before I condemn or praise the hackers who popped security -- really bad security, to hear them tell it -- at the Large Hadron Collider. Disclosure of vulnerabilities, whether they're in Microsoft products or massive physics experiments that already scare the snot out of nervous types, are one of those things that require a system. An orderly system. A system that the hacker community will never in a bazillion years be able to agree on.
But while I wait Estragon-like on those rules of etiquette for telling something their computer's zipper is down, I wonder if the Greek Security Team hackers who 0wned the LHC made even a little effort to contact CERN re the holes before they grasped for their fifteen minutes of fame. Look, dudes, it's nice that you're actually geek enough to not want to screw up the coolest science experiments of the decade, but maybe a little less cheap notoriety and a little more...honor?