Her Twitter feed boasts more than 3.7 million followers and is updated by herself and her "team" of handlers. A message Thursday apologized for "any offense the hacker's messages caused."
Spears' MySpace account was taken over at about the same time. Hacked messages have gone out from Spears' Twitter account before.
This time, Twitter users appeared to suspect something was up. The subject "donthackbritney" was one of the most popular topics on the site Thursday.
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