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The GIMP threatens PIN number security

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This must be a first: Linux image manipulation programme the GIMP has been fingered as a possible tool in uncovering people's PIN numbers as sent through the post. It's not all open source gloom, though, Photoshop can also be used to, in certain circumstances, enhance illicitly-obtained printed PIN numbers.

That, at least, is the conclusion of University of Cambridge reserachers who looked at the tamper-proof stationery used to deliver said numbers to expectant punters. Team member Mike Bond first became suspicious when he was "sent a new pin and found that poor printing meant it was readable with the naked eye", the BBC reports.

This was despite techniques such as secure envelopes which make it obvious if someone has opened them, and peel-off labels designed to obscure printed numbers.

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