The security company Avast it brings a theme to the surface that will cause corruption. The company has discovered that the ability to reset Android devices that essentially erases phone data (with factory reset) does not turn out so well. To prove it, 20 purchased Android smartphones from the internet and tried to test whether the former owner's personal data could be retrieved. Each phone had a reinstallation of the software before the sale, and according to Avast, it would have been hoped that their tests would have failed miserably. But this did not happen, the opposite, indeed.
Using widely available forensics software, η Avast αναφέρει ότι ήταν σε θέση να ανακτήσει με επιτυχία πάνω από 40.000 photos που αποθηκεύτηκαν από τους προηγούμενους ιδιοκτήτες στα τηλέφωνα. Πολλές από αυτές ήταν με children, others were sexual in nature with women in "various stages of undress" and hundreds of "male nude selfies." The company managed to recover the old queries search on Google, e-mail, and other texts. Avast said it was able to successfully identify four original owners of the phones by discovering data they thought had been permanently deleted.
For now, Avast results should be of concern to many opinions and we should look at them with some skepticism. The company has every interest in publishing this story, as it is a security software company, and claims that its own tools are the most effective of those provided by Google.
Of course, there is always the possibility that there is no deception behind this publication and that the data is not deleted after restoring the phone to the laboratory settings.
For iOS we should mention that Apple seems to have find the way to prevent data recovery from an iPhone or iPad has been reset-factory reset. On new devices, the iOS restore feature removes the encryption key that protects the user's data. Thus, even if the data is recovered without the user's knowledge, it is essentially useless.
