The smartphone will tell all about you




Your naked self, contacts and bank account information may be available to the next owner your Android, even after a full reset of the device – the conclusion made by Czech researchers. “Times” to sort out why it happens and what to do.

Avast – fairly well-known Prague company, specializing in software in the field of information security. Portal Cnet published the results of a recent study of Czech bezopasnik, according to which, even after clicking “Full Reset”, “Reset” (on different devices button called differently) on smartphones running Android, the data will not be deleted, even though in this paragraph menu settings smartphone commonly written: “Return to factory settings and delete all data from the phone.”

For their study, Avast bought on eBay 20 different smartphones on Android.

As a result, experts have managed to recover without any problems with smartphones purchased almost all of the data: more than 40 thousand. Photos (250 of them – naked self), 750 messages and letters, 250 files of contacts, information on the four previous owners, and in the case of one of the smartphones – even the loan application as a whole (and this passport details and bank account information).

Thus, even completely “zeroed” smart phones can be a repository for all the information about the previous owner: this photo and call history, and even intimate correspondence.

The results of this experiment indicate that in general people are quite lightly storing private data smartphones.

“Times” decided to ask the experts to question how serious the problem is and is there a way to counter it.

In producing companies were not surprised by the results of the study, but they find that it’s not as scary as it seems. As told to “Gazety.Ru” Oleg Budegicheev, Technical Expert Samsung Electronics in Russia, the findings presented in this article is partly true. Phone data stored on the built-in flash memory, and information stored on it can be restored. “However, the recovery needs physical access to the phone and a lot of time for data transmission. Attackers ravening phone, often do not pursue these goals, “- said Budegicheev.

A representative of one of the largest companies – phone manufacturers who wished to remain anonymous, was more categorical. According to him, it’s just a PR campaign and anti-virus vendors such strong statements are intended to remind the world about the existence of a company like Avast.

As the lead consultant of Symantec Ilya Lezhenin, the findings are not open because it is known that in normal delete files the data itself is not deleted, only the metadata about them. “It’s as if you pulled the page with the content from the book. A similar situation occurs when a full reset on smartphones running Android », – said the expert.

To avoid this, Roman Unuchek, anti-virus expert “Kaspersky Lab” advises users to hard reset to make a few simple steps. Firstly, you must first manually remove all personal photos and messages. Followed completely fill the memory of the device: it can set a variety of games, keep the movie on the memory card, etc. Then you need to set a password and encrypt data.

This can be done in the menu “Settings” – “Security” – “Encryption” by selecting “encrypt data”, says the expert. After all this, you can reset your phone to factory settings, said Unuchek.

Ilya Lezhenin agrees with his colleague, however, in his opinion, it may take a long time. “For this reason, manufacturers give for the sake of convenience, rather than security,” – said the expert. It is for this reason, he recommends the use of data encryption that prevent a similar situation.

Previously, hackers managed to get data from memory even when switched off. Memory is different from conventional in that it is completely volatile, and if no electric current, the data is erased. But it is not happening immediately. Thus, at room temperature, it takes approximately a second.

However, the German researchers were able to steal data. And this would have required not so much computer technology as a physicist. They froze smartphone yes temperature -15,5 ° C, and under these conditions the RAM already cleared for 6 seconds. That was enough to “merge” its image to a computer via USB-cable and this image has the necessary data. In this case, no encryption will not help.

Thus, if the attackers really want to get information from your smart phone, they will find a way to do it. Another thing is that the probability that you will become a victim of such stubborn kidnappers information is extremely small.


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