Apple is advising customers who have been charged for purchases not made by them to contact their bank or credit card provider.
Apple has also warned that if there is any chance a customer’s iTunes password could have been stolen, they should change it immediately.
The statement from Apple is a response to reports of iTunes security concerns in May.
An apps developer has also had his apps removed from the site for violating the developer Programme Licence Agreement, which includes fraudulent purchase patterns.
Apple is advising anyone concerned about password security to visit their website for advice on password best practice.
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