Privacy fail: Pictures cropped, redacted by Google Pixel phones can be recovered
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"The end result is that the image file is opened without the [truncate] flag, so that when the cropped image is written, the original image is not truncated," Buchanan said."If the new image file is smaller, the end of the original is left behind." The bits of the file that were supposed to be truncated were found to be recoverable as images after doing some reverse-engineering of the zlib compression library's methodology, which Buchahan says he was able to do"after a few hours of fiddling around." The end result is a proof of concept that anyone with an affected Pixel device canWhile you're at it, be sure to install the latest round of Android security updates, Pixel device or not.
What to make of it? If you have an affected Pixel device, and you've cropped or redacted screenshots and shared them, whoever has them can potentially recover that data. Once you've installed the update, future screenshots should be OK. ®
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