Even computers are disconnected from the Internet, can be hacked by using a simple mobile phone Bashny.Net

Israeli security experts from the University of Ben-Gurion University of the Negev has successfully passed informacijos computer to a normal mobile phone, using only the electromagnetic radiation that the computer emits in the normal operating mode.





 

A frame from the demonstration

Thus they have improved their result from last year, which is to receive the transferred data required smartphone. This study points to the need for serious tightening of the rules for the secret enterprises. Even computers to be completely disconnected from the Internet, can be used to covertly steal from them the secret and sensitive data.

In 2014, researchers successfully implemented the transfer of data between the computer and the smartphone. For successful transmission it was necessary to install special software on both the computer and the smartphone.

As a generator of radio signals and the transmitter was made by the video card connected to the monitor. Modulated signal Chinle built-in smartphone FM radio receiver, and decrypted by the mobile application. The researchers were able to achieve speeds of 60 bytes/sec.

FM receivers usually embedded in smartphones not only as a means of further entertainment, but also as an opportunity to get alerts about natural disasters in the absence of GSM communication.

But a secret of enterprise smartphones to carry prohibited in any case — they still built a photo (and video) camera, wi-fi, bluetooth and other means of data transfer that can damage the security of the enterprise. But on an ordinary phone without all these newfangled gadgets - such as Motorola C123, which the researchers used in their work, the suspicion is unlikely to fall. However, it can be used as a means of espionage.

This time the researchers used for radiation of the modulated signal the data bus of the computer. Particularly well suited for this purpose computers with the multichannel memory device if simultaneously transmit identical data on both channels, the signal strength increases.

Normal phone have been able to use instead of a smartphone due to the modification of its firmware. Updated the firmware allows you to receive digital data on the GSM frequencies. As planned by engineers, the normal background radiation of the computer at work is taken for 0, and increased by passing a special data bus — 1. The transmission is divided into blocks of 12 bits. The phone waits for the start of the block (header 1010), it is adjusted for the current level of the signal and then takes the rest of the unit.

The researchers successfully tested the system indoors with a few working computers to simulate a standard working environment, and also made similar for different operating systems — both Windows and Linux.

Using the phone as the receiver was able to reach speeds of up to 2 bits per second. Drawings of the submarine in this way will not give, but passwords, GPS coordinates, or even 256 bit RSA key it is possible. Moreover, if you use a more advanced receiver can increase the transmission speed of up to 1000 bits per second, and the range of reception — up to 30 meters, and that was done by the experimenters. In fact, it is possible to receive a signal from somewhere in the Parking lot next to the building in which the work is infected with malware computer. published

P. S. And remember, just changing your mind — together we change the world! ©

Source: geektimes.ru/post/259468/