Based Computing Security and Fault Tolerance

Any computer based system has both real and theoretical weaknesses. Computing security aims to devise ways to prevent or to avoid various weaknesses from being exploited. Confidentiality, integrity and availability are the three prime aspects of a computing system. Confidentiality ensures that computing-related assets of hardware, software and data are accessed only by authorized parties. Integrity means that assets can be modified only by authorized parties or only in authorized ways. Availability means that assets are accessible to authorized parties at appropriate times. Computing assets of hardware, software and data are often susceptible to various types of vulnerabilities e.g., interruption, interception, fabrication and modification.