English Dictionary

smudge attack

/smʌdʒ əˈtæk/

noun

(computer security) A method used to crack the password of a touchscreen device by analysing the oily smears left on the device's screen by the user's fingers.

The smudge attack on the computer system caused a major disruption.

意味（1）

(computer security) A method used to crack the password of a touchscreen device by analysing the oily smears left on the device's screen by the user's fingers.

Touch screens are touched, so oily residues, or smudges, remain on the screen as a side effect. Latent smudges may be usable to infer recently and frequently touched areas of the screen – a form of information leakage. This paper explores the feasibility of smudge attacks, where an attacker, by inspection of smudges, attempts to extract sensitive information about recent user input.