Hackers stole personal details of thousands of Lady Gaga fans after they broke into her UK website.
According to overseas reports, Gaga's site was hacked by the same cyber group responsible for the recent attack on Amy Winehouse's website as well as Justin Bieber's.
Apparently Gaga was incredibly distressed when she discovered what happened.
"She's upset and hopes police get to the bottom of how this was allowed to happen," a source told The Mirror.
Universal Music UK said the members affected were advised of the hack and that additional measures were put in place to protect members.
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