Air-gapped systems: Malware leaks data via high-frequency sound - | Golem.de:
A researcher has demonstrated how the presence of a smartwatch in a high-security ...
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Data Theft via Sound from Isolated SystemsA security expert demonstrated data exfiltration from network-isolated computers using ultrasonic waves captured by smartwatches within nine meters.
- Mordechai Guri introduced an attack technique that transfers data from air-gapped systems to smartwatches using ultrasonic sound waves.
- Malware on the isolated computer encodes data as tones between 18.5 and 22 kHz, frequencies mostly inaudible to humans.
- The smartwatch records these signals with its microphone and later transmits the data via Wi-Fi or cellular networks to attackers.
- Recommended defenses include banning wearable microphones, removing speakers from sensitive systems, and generating ultrasonic noise to block signals.
To protect air-gapped systems from Smartattack, Guri recommends a ban on smartwatches and other wearables with built-in microphones in high-security environments.— Mordechai Guri, a well-known security researcher, on the protective measures against his new attack technique.
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Main Topics
use of integration of telecommunications and computers to access, store, transmit, and manipulate information
software that is intentionally hostile, intrusive, or damaging to a computer or network
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May 27, 2025 · Reading time: ~45 sec.
Summary created with AI assistance · Source: heise.de
Summary created with AI assistance · Source: heise.de
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