New research shows that it is possible to turn your computer’s RAM into a wireless signal transmitter. If you don’t want to get hacked, there is nothing better than directly removing the Wi-Fi card from the computer. However, this does not mean that it is 100% protected.
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Academics from a university in Israel have published new research demonstrating the experiment. In their demonstration, they show how it is possible for RAM to send information stored in the computer wirelessly. This information can be received by any simple wireless receiving device at a distance of several meters.
The technique has been called AIR-FI and it is based on the idea that any electrical component generates electromagnetic waves when transmitting current.
Therefore, if one modulates these electromagnetic waves one can get information transmitted as if it were a Wi-Fi network, which in the end it sends out electromagnetic radio waves.
The research shows how it is possible to manipulate RAM and the current passing through it to generate electromagnetic waves at a frequency of the 2400GHz Wi-Fi spectrum.
If an attacker manages to enter the computer and insert the malicious code, they could then wirelessly extract information without the victim knowing and trusting that the computer is completely disconnected from the outside.
The signal, it must be said, is extremely slow. But it can be more than enough to get valuable information from highly protected computers.
This is not the first time these researchers do something like this. For several years they have taught how different techniques can be used to obtain information from computers that are apparently completely closed.
Often extremely valuable information is kept on computers that are neither connected to the Internet nor to local networks. Hacking them is not that easy but now you know it is possible. Clever and complex ideas like these prove that even the safest equipment in the world is not completely safe.
