Air-Gap | Breaking Cybersecurity News | The Hacker News

A new side-channel attack dubbed PIXHELL could be abused to target air-gapped computers by breaching the "audio gap" and exfiltrating sensitive information by taking advantage of the noise generated by pixels on an LCD screen. "Malware in the air-gap and audio-gap computers generates crafted pixel patterns that produce noise in the frequency range of 0 - 22 kHz," Dr. Mordechai Guri , the head of the Offensive Cyber Research Lab in the Department of Software and Information Systems Engineering at the Ben Gurion University of the Negev in Israel, said in a newly published paper. "The malicious code exploits the sound generated by coils and capacitors to control the frequencies emanating from the screen. Acoustic signals can encode and transmit sensitive information." The attack is notable in that it doesn't require any specialized audio hardware, loudspeaker, or internal speaker on the compromised computer, instead relying on the LCD screen to gene...

A novel side-channel attack has been found to leverage radio signals emanated by a device's random access memory (RAM) as a data exfiltration mechanism, posing a threat to air-gapped networks. The technique has been codenamed RAMBO (short for "Radiation of Air-gapped Memory Bus for Offense") by Dr. Mordechai Guri, the head of the Offensive Cyber Research Lab in the Department of Software and Information Systems Engineering at the Ben Gurion University of the Negev in Israel. "Using software-generated radio signals, malware can encode sensitive information such as files, images, keylogging, biometric information, and encryption keys," Dr. Guri said in a newly published research paper. "With software-defined radio (SDR) hardware, and a simple off-the-shelf antenna, an attacker can intercept transmitted raw radio signals from a distance. The signals can then be decoded and translated back into binary information." Over the years, Dr. Guri has conco...

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