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The OSI Security Architecture As Introduced earlier to the OSI security Architecture in previous Blog Posts http://hackups.blogspot.in/2014/05/security-attacks-osi-security.html and a follow up to the Security Attacks post http://hackups.blogspot.in/2014/05/computer-security-overview.html . SECURITY MECHANISM Security mechanisms are used to implement security  services. A process (or a device incorporating such a process) that is Designed to detect, prevent, or recover from a security Attack . There is no single mechanism that will support all the services required. However ,one particular element underlies many of the security mechanisms in use and that Element is Cryptographic Techniques.  Under Security Mechanisms (X.800) the following two main mechanisms are known: SPECIFIC SECURITY MECHANISMS: The Specific Security Mechanisms include the following  Encipherment, Data signatures, Access control, Data Integrity, Authentication Exchang...

The OSI Security Architecture As Introduced earlier to the OSI security Architecture in previous Blog Post http://hackups.blogspot.in/2014/05/computer-security-overview.html ·         Security Attack:  Any action that compromises the security of information owned by an organization ·         Security Mechanism:  A process (or a device incorporating such a process) that is Designed to detect, prevent, or recover from a security Attack. ·         Security Services:  A processing or communication service that enhances the security of the data processing systems and the information transfers of an organization. The services are intended to counter security attacks, and They make use of one or more security mechanisms to provide the services. SECURITY ATTACKS Useful way of classifying security attacks is in terms of Passive and Ac...

Computer Security Generally referred to as The Collection of Tools that are Designed to Protect Us From Hackers. These tools are necessary as these Protect us from Hackers and make it Tough for them to Crack into Your System. Now the Transmission of Data That is Transmitted Over a Network has to be protected too. So, The Collection of Tools Designed To Protect us From Hackers in a Network is known as Network Secutiry The nowadays trend of Security has changed a lot. Top companies Invest a lot on Security they make it Very Clear that all data should be protected and secured by any Means and it should be, as things and plans are more secret, it means a lot to the companies. If any Information is leaked the Security is Compromised and it Can be of Great loss to the company. Thus providing Information Security Is a Need. No Boundary between Network Security and Computer Security. Talking about Security we also Deal with the Word Virus. Now, Virus can be executed in a c...