Logging and auditing is an important system facility for monitoring correct system operation and for detecting potential security problems. We present an architecture for implemen...
Access control software must be based on a security policy model. Flaws in them may come from a lack of precision or some incoherences in the policy model or from inconsistencies ...
The limited flexibility of the Internet to support mobility has motivated many researchers to look for alternative architectures. One such effort that combines security and multi...
Hannes Tschofenig, Andrei Gurtov, Jukka Ylitalo, A...
Anonymous channels are necessary for a multitude of privacy-protecting protocols. Onion routing is probably the best known way to achieve anonymity in practice. However, the crypto...
CAPTCHA is a standard security technology that presents tests to tell computers and humans apart. In this paper, we examine the security of a new CAPTCHA that was deployed until v...