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154
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CCS
2007
ACM
16 years 1 months ago
2007
ACM
er presents a novel approach for concisely abstracting authentication s and for subsequently analyzing those abstractions in a sound manner, i.e., deriving authentication guarante...
194
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CCS
2007
ACM
16 years 1 months ago
2007
ACM
Distance bounding protocols have been proposed as means of detecting relay attacks, also known as mafia fraud. In this paper we present the first symmetric key based distance bou...
146
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CCS
2007
ACM
16 years 1 months ago
2007
ACM
We present Asirra (Figure 1), a CAPTCHA that asks users to identify cats out of a set of 12 photographs of both cats and dogs. Asirra is easy for users; user studies indicate it c...
180
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CCS
2007
ACM
16 years 1 months ago
2007
ACM
Current trends demonstrate an increasing use of polymorphism by attackers to disguise their exploits. The ability for malicious code to be easily, and automatically, transformed in...
222
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CCS
2007
ACM
16 years 1 months ago
2007
ACM
Draw a secret (DAS) is a representative graphical password scheme. Rigorous theoretical analysis suggests that DAS supports an overall password space larger than that of the ubiqu...