RealNews

Key clicks betray passwords, typed text

The researchers, from the University of California at Berkeley, found that a 10-minute recording of a person typing at the keyboard reveals enough information for a computer analysis to recover nearly 90 percent of the words entered. The recording can be low quality–the researchers used a $10 microphone–and the system does not need previous samples of a user’s typing to perform the analysis. Moreover, the technique can frequently guess a person’s password in as little as 20 attempts. Full Story

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