A "god mode" exploit recently found in Diablo III, which allowed gamers using the Wizard class to effectively play without fear of dying, is in the process of being shut down.
Blizzard has said that it is "currently rolling out a hotfix for a recent bug regarding invulnerable Wizards". You can read the full statement below.
We are currently rolling out a hotfix for a recent bug regarding invulnerable Wizards. We will continue to carefully monitor this issue and welcome anyone with information about bugs or hacks to submit a detailed report to our Hacks Team by emailing firstname.lastname@example.org, or by completing the Hacks Report web form. In your correspondence, please include any steps necessary to replicate the issue as well as any additional details you are able to provide.
No word yet on closing the similar, if less extreme, exploit found for the Barbarian class.
INVULNERABLE WIZARDS: DO NOT FIX THE GOD MODE [Blizzard Forums]