APPLIED CRYPTOGRAPHY AND PRACTICAL SCENARIOS FOR CYBER SECURITY DEFENSE

The Internet is a rather new technology for us, but nevertheless it has become a force which is working its way into all our lives and there is no doubt in this. However it is important to realize the security issues that involve the Internet. Cyber security has emerged within the latest years as an issue of vital national and international importance, since governments, businesses and individuals are under constant attack from other governments, cyber criminals and hackers. These attacks consists in stealing large amount of money or personal and business data and compromise sensitive government operations. This paper explains these threats with accent on new forms of it. For in-depth understanding of the concept involved in cyber security, some attack scenarios explained in detail have been included.