Look out UAVs can steal data by flashing LED lights

Drones are becoming more and more popular, because they find it very useful. But there is a problem in the use of drones: immoral, and even illegal. UAVs can be used to steal data, steal from the computer, steal through the PC flashing light. Install the camera UAV hovering in the sky, the computer LED lights flashing, the data will be transferred to the uav.

Fortunately, the theft of data was achieved in the experiment, the Israeli - Gurion University researchers completed the experiment. In order to complete the attack, to prevent attacks, the researchers designed a program, they use the air gap system will be sensitive data and potential hackers separated. However, if the attacker can be implanted in the malware system, researchers will fail, because the computer hard drive LED lights flashing every time it is possible to leak data.

Mordecai Guri, a researcher at Israel's Guri University, said: "if an attacker finds an entry point in the air gap system, the Mordechai can send the data to the attacker.". The attacker can control the hard disk LED indicator light, allowing it to blink up to 6000 times per second. We can transmit data at a very fast rate. "

In the course of the study, the team found that they can use 4000 bits per second to transfer data, malware can even make flash repeat, to ensure that the data will not be lost.

Computer LED lights have been flashing, when the malware is not likely to cause suspicion. The researchers also found that if the data read each time less than 4K bytes, LED flashing time even less than 1/5 milliseconds. Using the "on-off keying" (OOK) system, flashing the information sent to the camera and optical sensors. Intelligent mobile phone camera can only accept 60 bits of data per second, GoPro camera can receive 120 bits per second, the speed is too slow, so the researchers used SIEMENS photodiode sensor, it can transmit 4000 bits of data per second.

Let the LED lights flashing quickly, not aware of the human eye, while using a light sensor to collect data, the attacker can do. The researchers suggest that if you want to prevent an attacker from invasion, it is best to use air gap system to isolate the machine, put it in a safe room, away from the window.

We can put a layer of film on the windows of the building, it can shield the camera flash, the market there are software can access the hard disk, making noise, when the attacker through the hard disk LED lights to steal data can interfere.

The easiest and most effective way to prevent an attack is to cover the LED light. If the UAV can not see the LED lights, there is no way to steal data.

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