Gap is dealing with problems resulting from losing the personal details of 800,000 people who applied to it for jobs.
A laptop stolen from a Gap supplier who dealt with job applications has caused the problem, as the machine's data was not encrypted.
The clothes company has refused to name the company involved and has suggested that the data should have been encrypted under its agreement with its supplier.
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The people affected by the theft were those who applied for jobs at Gap in the US, Puerto Rico and Canada.
Names, addresses and Social Security numbers were among the details compromised, which would be very useful for potential identity thieves.
Gap said there is no suggestion at this stage that the theft was anything other than an opportunist PC theft.
Gap has promised the obligatory credit checking facilities to those affected by the theft but may now face a class action suit as a result - just as TK Maxx parent TJX did when it lost customer data.
The Gap jobs debacle also follows the massive recent data breach at recruitment firm Monster.