Defending Against Microphone-Based Attacks with Personalized Noise
| Autor: | Donald S. Williamson, Yuchen Liu, Ziyu Xiang, Eun Ji Seong, Apu Kapadia |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
obfuscating
Ethics noise Microphone Computer science QA75.5-76.95 privacy BJ1-1725 01 natural sciences 030507 speech-language pathology & audiology 03 medical and health sciences Noise microphones Electronic computers. Computer science audio 0103 physical sciences Electronic engineering General Earth and Planetary Sciences 0305 other medical science 010301 acoustics General Environmental Science |
| Zdroj: | Proceedings on Privacy Enhancing Technologies, Vol 2021, Iss 2, Pp 130-150 (2021) |
| ISSN: | 2299-0984 |
| Popis: | Voice-activated commands have become a key feature of popular devices such as smartphones, home assistants, and wearables. For convenience, many people configure their devices to be ‘always on’ and listening for voice commands from the user using a trigger phrase such as “Hey Siri,” “Okay Google,” or “Alexa.” However, false positives for these triggers often result in privacy violations with conversations being inadvertently uploaded to the cloud. In addition, malware that can record one’s conversations remains a signifi-cant threat to privacy. Unlike with cameras, which people can physically obscure and be assured of their privacy, people do not have a way of knowing whether their microphone is indeed off and are left with no tangible defenses against voice based attacks. We envision a general-purpose physical defense that uses a speaker to inject specialized obfuscating ‘babble noise’ into the microphones of devices to protect against automated and human based attacks. We present a comprehensive study of how specially crafted, personalized ‘babble’ noise (‘MyBabble’) can be effective at moderate signal-to-noise ratios and can provide a viable defense against microphone based eavesdropping attacks. |
| Databáze: | OpenAIRE |
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