Air-Gap Network | Breaking Cybersecurity News | The Hacker News

A security researcher who has a long line of work demonstrating novel data exfiltration methods from air-gapped systems has come up with yet another technique that involves sending Morse code signals via LEDs on network interface cards ( NICs ). The approach, codenamed  ETHERLED , comes from Dr. Mordechai Guri , the head of R&D in the Cyber Security Research Center in the Ben Gurion University of the Negev in Israel, who recently outlined  GAIROSCOPE , a method for transmitting data ultrasonically to smartphone gyroscopes. "Malware installed on the device could programmatically control the status LED by blinking or alternating its colors, using documented methods or undocumented firmware commands," Dr. Guri said. "Information can be encoded via simple encoding such as Morse code and modulated over these optical signals. An attacker can intercept and decode these signals from tens to hundreds of meters away." A network interface card, also known as a netwo

A novel data exfiltration technique has been found to leverage a covert ultrasonic channel to leak sensitive information from isolated, air-gapped computers to a nearby smartphone that doesn't even require a microphone to pick up the sound waves. Dubbed  GAIROSCOPE , the adversarial model is the latest addition to a long list of  acoustic, electromagnetic, optical, and thermal approaches  devised by Dr. Mordechai Guri , the head of R&D in the Cyber Security Research Center in the Ben Gurion University of the Negev in Israel. "Our malware generates ultrasonic tones in the resonance frequencies of the  MEMS gyroscope ," Dr. Guri said in a  new paper  published this week. "These inaudible frequencies produce tiny mechanical oscillations within the smartphone's gyroscope, which can be demodulated into binary information." Air-gapping is seen as an  essential security countermeasure  that involves isolating a computer or network and preventing it from es

As a relatively new security category, many security operators and executives I've met have asked us "What are these Automated Security Validation (ASV) tools?" We've covered that pretty extensively in the past, so today, instead of covering the " What is ASV?" I wanted to address the " Why ASV?" question. In this article, we'll cover some common use cases and misconceptions of how people misuse and misunderstand ASV tools daily (because that's a lot more fun). To kick things off, there's no place to start like the beginning. Automated security validation tools are designed to provide continuous, real-time assessment of an organization's cybersecurity defenses. These tools are continuous and use exploitation to validate defenses like EDR, NDR, and WAFs. They're more in-depth than vulnerability scanners because they use tactics and techniques that you'll see in manual penetration tests. Vulnerability scanners won't relay hashes or combine vulnerabilities to further attacks, whic