Thesiss

The research presented in this thesis aims to extend the capabilities of human interaction proofs in order to improve security in web applications and services. The research focuses on developing a more robust and efficient Completely Automated Public Turing test to tell Compute…

The importance of the data authentication has resulted in the science of the data protection. Interest in this knowledge has been growing due to the increase in privacy of the user's identity, especially after the widespread use of online transactions. Many security techniques a…

A large number of user PCs are currently infected with different types of malicious software including spyware, keyloggers, and rootkits. In general, any Internet-connected end-host cannot be fully trusted. In addition to this compromised host problem, attacks exploiting usabili…

In the age of technology, the Internet has spread widely and used for multiple purposes by users of all ages, especially children who start using it frequently to play in their spare time. With the use of the Internet, children must have a sufficient security awareness to avoid …