Pasting relevant abstract section: > Our research demonstrates that the mechanical components in magnetic hard disk drives behave as microphones with sufficien

Pasting relevant abstract section: > Our research demonstrates that the mechanical components in magnetic hard disk drives behave as microphones with sufficient precision to extract and parse human speech. These unintentional microphones sense speech with high enough fidelity for the Shazam service to recognize a song recorded through the hard drive. This proof of concept attack sheds light on the possibility of invasion of privacy even in absence of traditional sensors. We also present defense mechanisms, such as the use of ultrasonic aliasing, that can mitigate acoustic eavesdropping by synthesized microphones in hard disk drives. So this attack is for magnetic HDDs, not SSDs or flash media.