What is Security Techniques

The techniques and tools available for the attackers and protectors are decisive and the main cause for deciding the leading and winning side. This chapter discusses the main concepts, developments, and future trends of security. There are three main reasons for security development and its innovation. The first reason is: Perfect security does not exist; this will lead the researcher to develop more and more methods to defend against new attacks and to support the existence security systems. The second reason is: New technology always brings new threats, which means new countermeasures against those threats is always a necessity. The third reason is: There is no single countermeasure that can be used to ensure security for our systems, and there are many new threats and attacks need to be defeated. For these reasons, security is very active subject and needs more financial support for research and system development, thoughts, technologies, tools, and skilled people to ensure and maintain security for our systems.