In information technology the Security is set of restriction of information assets through the use of technology, processes and training. In Computer, Security is the process of preventing and detecting unauthorized use of your computer. It involves the process of safeguarding against intruders from using your computer resources for malicious intents or for their own gains or even gaining access to them accidentally. Security is a branch of Information Security and is often used interchangeably with the term. It encompasses several Security measures such as software programs like anti-virus suites, firewalls, and user dependant measures such as activating deactivating certain software features like Java scripts, ActiveX and being vigilant in using the computer and the network resources. Data present in a computer can also be misused by unauthorized intrusions. An intruder can modify and change the program source codes and can also use your pictures or email accounts to create derogatory content such as pornographic images, fake misleading and offensive social accounts.