Carphone Warehouse on Saturday said hackers had gained access to the personal information of 2.4 million of its online customers, in the latest high-profile breach of online privacy.

In a press release, the U.K. cellular retailer said its websites and mobile Internet services had been penetrated by hackers and that an investigation indicated that “personal data which may include name, address, date of birth and bank details of up to 2.4 million customers may have been accessed.”

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