Video: Force Open – Lightweight Black Box File Repair

Karl Wust discusses his research at DFRWS EU 2017.

Wust: Hi everyone. My name is Karl Wust, and I’m a security researcher from ETH Zurich, and the work that I present here is joint work with Petar Tsankov, Sasa Radomirovic, and Mohammad Torabi Dashti.

Usually, when we open a file – if we open an image file, for example – we expect something like this. The [file viewer] pops up and shows us the image that we want to see, in this case, a nice photo of Zurich. But sometimes, files get corrupted, for different reasons – transmission errors, [degradated] storage, or some other reasons. And in some cases, we can still open the image, but it will look something like this. So we get some artefacts here. In this case, we have some part of the image that is on the bottom right that should actually be on the bottom left.

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