In this paper, we propose a new form of image-based CAPTCHA we term "scene tagging". It tests the ability to recognize a relationship between multiple objects in an imag...
—This paper seeks to answer fundamental questions about trade-offs between static and dynamic security analysis. It has been previously shown that flow-sensitive static informat...
—The purpose of secure devices such as smartcards is to protect secret information against software and hardware attacks. Implementation of the appropriate protection techniques ...
Ashur Rafiev, Julian P. Murphy, Alexandre Yakovlev
The management and maintenance of a large number of Web services is not easy and, in particular, needs appropriate authorization policies to be defined so as to realize reliable an...
In many systems, items of information have owners associated with them. An owner of an item of information may want the system to enforce a policy that restricts use of that infor...