We systematically study the design of image recognition CAPTCHAs (IRCs) in this paper. We first review and examine all IRCs schemes known to us and evaluate each scheme against th...
Abstract— Online feedback-based rating systems are gaining popularity. Dealing with unfair ratings in such systems has been recognized as an important problem and many unfair rat...
156 views129 votes15 years 6 months ago KBSE 2005»
Intrusion detection systems are distributed applications that analyze the events in a networked system to identify malicious behavior. The analysis is performed using a number of ...
Many real–world networks show a scale–free degree distribution, a structure that is known to be very stable in case of random failures. Unfortunately, the very same structure ...
All information systems can be represented by a conceptual and abstracted systems diagram. Therefore all attacks against information systems can also be ted. By studying the securi...
In order to extract a suitable common core information model, design representations on both system and architecture levels are analyzed. Following the specification trajectory, ...
140 views135 votes15 years 7 months ago HICSS 2007»
This paper presents a graph transformation based approach to design pattern evolution. An evolution of a design pattern includes modifications of pattern elements, such as classes...
Even though passwords are the most convenient means of authentication, they bring along themselves the threat of dictionary attacks. Dictionary attacks may be of two kinds: online...
We investigate the resiliency of the Internet at the Autonomous System (AS) level to failures and attacks, under the real constraint of business agreements between the ASs. The ag...
— Determining the optimal topology of a graph is pertinent to many domains, as graphs can be used to model a variety of systems. Evolutionary algorithms constitute a popular opti...