What is Keyloggers

Computer viruses have been studied for a long time both by the research and by the application communities. As computer networks and the internet became more popular from the late 1980s on, viruses quickly evolved to be able to spread through the internet by various means such as file downloading, email, exploiting security holes in software, etc. In general, epidemic models assume that individuals go through a series of states at a certain constant set of rates. Different epidemic models have been proposed based on the characteristics of the systems and the topology of the network. In this chapter, an analysis of various epidemic models will be analyzed under differential mathematical systems.