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The internet is growing rapidly and interconnected different wired and wireless networks with each other. By using a client server architecture computing devices which are located at different geographical locations all around the world connect to the World Wide Web. Client can access information from the web server through the web browser. Web server fetches data from the database server. Malicious...
In Social Network websites, the users can report the bad behaviors of other users. In order to do so, they can create a kind of escalation ticket called abuse report in which they detail the infraction made by the “bad” user and help the website moderator to decide on a penalty. Today Social Networks count billions of users, the handling of the abuse reports is no more executed manually by moderators;...
Distributed Denial of Service (DDoS) attacks pose a serious threat to efficient and uninterrupted Internet services. During Distributed Denial of Service (DDoS), attackers make fool of innocent servers (i.e., Slave) into reddening packets to the victim. Most low-rate DDoS attack detection mechanisms are associated with specific protocols used by the attacks. Due to the use of slave, it has been found...
Along with the increasing popularity of computer networks, network applications are used more widely. This Paper roughly described the principles of DoS and DDoS attacks, as well as how to detect DDoS attack; meanwhile, this Paper also discusses the defensive measures against DDoS, which is of positive effect for defense against DDoS attack.
In this article we created the mathematical model of “client to server” communication including the compromised node probabilities and a number of possible routes having an admission to access points, also comparative characteristics of DoS/DDoS attacks in computer network has been provided herewith.
Remote user authentication scheme is a mechanism which allows a server to authenticate a remote user over insecure channel. Recently, Goriparthi et al. made an enhancement based on Das et al.'s remote user authentication scheme using bilinear pairings. The scheme has the merits of no verification table, freely changing password and preventing the forgery attack and the replay attack. This paper, however,...
The interactive behavior between the hacker and the defender is similar to information warfare. The process of attack and defend can be abstracted as a tree diagram and analyzed based on game theory. When a hacker launches an attack, he must do his best to get expected payoff. Similarly the defender may hope to protect system against attacker successfully by minimizing security investment. The tradeoff...
Many password authentication schemes have been proposed for electronic commerce environment; however, none of them is secure enough. Hwang and Yeh proposed an improvement on the Peyravian-Zunic password authentication scheme including protected password transmission and password change. We demonstrate that the Hwang-Yeh scheme is also vulnerable to several kinds of attacks though the scheme has repaired...
Service discovery, an essential building block of nomadic and ubiquitous computing applications, needs to be secured to be effectively deployed. Centralized and decentralized approaches have been proposed to this end. This paper analyzes the application layer secure matching function using a Markovian performance model in order to analyze the effects of DoS attacks in centralized and decentralized...
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