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Apps that use UDID for identification, like Grindr and Blendr, could allow future users of your iPhone to access personal information. IF you have sold or traded-in your iPhone be warned your data may not be safe even though you think you have wiped it. The problem arises with certain apps, including popular gay hook up service Grindr and its heterosexual equivalent Blendr, which use the phone’s unique ID (known as “UDID”) to log you in, the Sydney Morning Herald reports. If your phone’s new owner downloads the same app they will be automatically logged in under your name together with all your data, the report said. “It’s just a very poor security architecture choice,” director of security consulting company HackLabs, Chris Gatford, told the Herald. “We certainly wouldn’t recommend only relying on UDID values as an authentication mechanism.” The report said while Grindr uses a secure algorithm based on the UDID the number is still tied to the device and the data retained. The latest security concerns follow last year’s reports of an Australian hacker who found a way to log in to other people’s Grindr accounts. Although Grindr said just only 720 profiles of its 3 million users had been affected, it did not stop to US congressman from demanding an explanation.
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