ビデオ会議中にマイクが拾ったキーボードの打鍵音から入力データを推測することが可能と報告されるなど、音を使ってデータを盗む手法が一般化しつつあります。新しく、液晶モニターが描画する際のノイズを利用してデータを伝送し、ディスプレイをスピーカーの代わりにして機密情報を抜き出す「PIXHELL攻撃」が発表されました。

Attached: 1 video Remember my NES chiptune cover of the #KnightRider theme? https://mastodon.gamedev.place/@PixelProphecy/115092895223554752 Well. Now I made an OPL-2 AdLib cover. 😅✨ 🔊Sound on! #...

A novel acoustic attack named 'PIXHELL' can leak secrets from air-gapped and audio-gapped systems, and without requiring speakers, through the LCD monitors they connect to.

A técnica, apresentada durante experimento em laboratório, é direcionada aos computadores isolados das redes externas

A novel acoustic attack named 'PIXHELL' can leak secrets from air-gapped and audio-gapped systems, and without requiring speakers, through the LCD monitors they connect to. [...]

A novel acoustic attack named 'PIXHELL' can leak secrets from air-gapped and audio-gapped systems, and without requiring speakers, through the LCD monitors they connect to.

Mordechai Guri Nel panorama attuale della cybersecurity, pochi studiosi hanno saputo distillare così tante intuizioni disruptive quanto Mordechai Guri. Ricercatore, docente e autore prolifico, Guri è ...

A novel acoustic attack named 'PIXHELL' can leak secrets from air-gapped and audio-gapped systems, and without requiring speakers, through the LCD monitors they connect to.

A novel acoustic attack named 'PIXHELL' can leak secrets from air-gapped and audio-gapped systems, and without requiring speakers, through the LCD monitors they connect to.

Discover PIXHELL, a new side-channel attack exploiting screen-generated noise to breach air-gapped computers and exfiltrate sensitive data.

A novel acoustic attack named 'PIXHELL' can leak secrets from air-gapped and audio-gapped systems, and without requiring speakers, through the LCD monitors they connect to.

A novel acoustic attack named 'PIXHELL' can leak secrets from air-gapped and audio-gapped systems, and without requiring speakers, through the LCD monitors they connect to.

Discover PIXHELL, a new side-channel attack exploiting screen-generated noise to breach air-gapped computers and exfiltrate sensitive data.

Air-gapped systems are disconnected from the Internet and other networks because they contain or process sensitive data. However, it is known that attackers can use computer speakers to leak data via sound to circumvent the air-gap defense. To cope with this threat, when highly sensitive data is involved, the prohibition of loudspeakers or audio hardware might be enforced. This measure is known as an `audio gap'. In this paper, we present PIXHELL, a new type of covert channel attack allowing hackers to leak information via noise generated by the pixels on the screen. No audio hardware or loudspeakers is required. Malware in the air-gap and audio-gap computers generates crafted pixel patterns that produce noise in the frequency range of 0 - 22 kHz. 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. We present the adversarial attack model, cover related work, and provide technical background. We discuss bitmap generation and correlated acoustic signals and provide implementation details on the modulation and demodulation process. We evaluated the covert channel on various screens and tested it with different types of information. We also discuss \textit{evasion and stealth} using low-brightness patterns that appear like black, turned-off screens. Finally, we propose a set of countermeasures. Our test shows that with a PIXHELL attack, textual and binary data can be exfiltrated from air-gapped, audio-gapped computers at a distance of 2m via sound modulated from LCD screens.