In this course are studied , in an unified way, the main problems and threats to security in networks and telematic services, and distinct techniques to protect them are presented.
First the subject is considered from a general point of view, so that the concepts, services and security techniques studied, can be applied to any type of network, telematic service or information system to secure. This block is formed by chapters 1 to 4. This carries to treat with detail the three central subjects of security: the algorithmic part (encipherment, digital signature and integrity), the authentication problem and the procedures of key management. The aim is to give the student the knowledge and practice to entitle him/her to ease his understanding of the particular techniques that each application can require and to apply them to other scenarios that he(she) have to face.
Afterwards the subject is considered in a more particular way, reviewing the problems, techniques and standards of security in some of the communication environments of greater prevalence in actuality.
Thus a chapter is devoted to the security to the IP level, central protocol in the Internet architecture, and another chapter to the security in the Web, given the current importance of this way of telematic intercommunitation. The main security problems in electronic commerce using the Web are presented, studiing in particular the operation of Paypal, one of the payment methods more used in the Web. Given also the every time greater utilisation of wireless communications and his particular security problems, one chapter is devoted to the subject.
The course is closed with an introduccion to other two subjects of increasing transcendence: botnets, malicious networks and software, and the forensic analysis of information systems.
