1294 search results - page 91 / 259 » Securing Against Insider Attacks |
120
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CCS
2009
ACM
16 years 5 months ago
2009
ACM
In this work, we study several properties of the SHA-2 design which have been utilized in recent collision attacks against reduced round SHA-2. Small modifications to the SHA-2 des...
129
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CHI
2009
ACM
15 years 11 months ago
2009
ACM
Authentication in public spaces is a risky task. Frauds on cash machines (ATMs) are not uncommon nowadays. The biggest group of attacks is observation attacks, which focus on reco...
149
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IWDW
2005
Springer
15 years 10 months ago
2005
Springer
Abstract. In this paper, the security of Dither Modulation Quantization Index Modulation schemes for digital images is analyzed. Both pixel and DCT coefficient quantization schemes...
169
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CHI
2011
ACM
14 years 8 months ago
2011
ACM
While a large body of research on image-based authentication has focused on memorability, comparatively less attention has been paid to the new security challenges these schemes m...
140
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CHI
2008
ACM
16 years 4 months ago
2008
ACM
A number of recent scams and security attacks (phishing, spyware, fake terminals, ...) hinge on a crook's ability to observe user behavior. In this paper, we describe the des...