The group presented their research last week in San Francisco at the IEEE Symposium on Security and Privacy.
Adversaries without special-purpose equipment can cause errors in the hard disk drive using either audible or ultrasonic acoustic waves.
An adversary without any special purpose equipment can co-opt built-in speakers or nearby emitters to cause persistent errors.
In this case, an adversary would temporarily control an emitter in the system though some means.
This obviously presents a challenge, especially for remote attacks.
These noise levels are equivalent to the sound of a car horn, live rock music or chainsaw.
Are businesses and government agencies listening?
source: www.techworm.net