Recent research has shown that the integrity of sensor measurements can be violated
through out-of-band signal injection attacks. These attacks target the conversion process …

Over the last six years, several papers demonstrated how intentional analog interference
based on acoustics, RF, lasers, and other physical modalities could induce faults, influence …

With the wide use of Automatic Speech Recognition (ASR) in applications such as human
machine interaction, simultaneous interpretation, audio transcription, and so on, its security …

Covert eavesdropping via microphones has always been a major threat to user privacy.
Benefiting from the acoustic non-linearity property, the ultrasonic microphone jammer (UMJ) …

Ultrasonic microphone jammers protect speech privacy from being eavesdropped by
leveraging microphones' non-linearity. However, existing jammers merely introduce …

The widely used devices (eg smartphones, recorders) equipped with microphones have
posed a severe threat to confidential conversations. In this paper, we design an inaudible …

Eavesdropping via microphones has been a serious threat to security and privacy. Recent
advances in utilizing non-linearity property of microphone amplifiers enable ultrasonic …

Covert eavesdropping via microphones has always been a major threat to user privacy.
Benefiting from the acoustic non-linearity property, the ultrasonic microphone jammer (UMJ) …

With the miniature design and ubiquitous use of voice recording devices, the need for anti-
eavesdropping has become essential, especially in confidential meetings. Previous studies …

This paper presents an innovative anti-eavesdropping technique referred to as" Time-
Frequency Mosaic." Time-Frequency Mosaic focuses on intensifying interference within the …