Well, it's probably safer to publish the hack anonymously and see if it withstands counter-hacking. Could be Microsoft is baiting and waiting for just such attacks. The giant might even leak and spread a few itself in order to shoot them down, to boost its eye-mote credibility.
Send the hack to Cryptome anonymously if there's no better way to test its effectiveness. Keeping snakeoil secret is a sure way to uncontested success, aka the way of Redmond.
