Blizzard has said it is taking reports about a wave of hacked Diablo 3 accounts "extremely seriously".
Since Sunday there have been a growing number of reports that many people are logging into the game to discover their gold, items and even characters missing.
Community Manager Lylirra said, "Historically, the release of a new game - such as a World of Warcraft Expansion - will result in an increase in reports of individual account compromises, and that's exactly what we're seeing now with Diablo III. We know how frustrating it can be to become the victim of account theft, and as always, we're dedicated to doing everything we can to help our players keep their Battle.net accounts safe."
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