Denial-of-Service (DoS) Attack and Botnet

Abstract

This chapter describes how the consequence and hazards showcased by Denial of Service attacks have resulted in the surge of research studies, commercial software and innovative cogitations. Of the DoS attacks, the incursion of its variant DDoS can be quite severe. A botnet, on the other hand, is a group of hijacked devices that are connected by internet. These botnet servers are used to perform DDoS attacks effectively. In this chapter, the authors attempt to provide an insight into DoS attacks and botnets, focusing on their analysis and mitigation. They also propose a defense mechanism to mitigate our system from botnet DDoS attacks. This is achieved by using a through access list based configuration. The artful engineering of malware is a weapon used for online crime and the ideas behind it are profit-motivated. The last section of the chapter provides an understanding of the WannaCry Ransomware Attack which locked computers in more than 150 countries.