Computer Security is implemented using both software as well as Hardware. Software generally includes logical Programs .There are several techniques used for designing security systems. Some of these make use of what is called the Principle of least privilege where only a restricted access to a system is available. Doing so ensures that even if a hacker or any unauthorized person that gains access to some part of the system cannot access anymore parts. A security management operation called full disclosure helps make sure that if bugs are found the window vulnerability, that is reducing the strength of information access security, is kept as short as possible. Security designing usually involves positioning security controls. These help maintain the system’s confidentiality, integrity, accountability etc. Using hardware to implement system security is achieved by using devices that ensure restricted physical access to the system software. One example is that of the Dongles. This is an electronic device that provides physical access to the system when it is plugged in.

One of the main branches of Computer Security is the Internet Security. It provides browser or security for networks in general. Internet security is essential since internet is an insecure open channel where any and every kind of information is available. It is an openly accessible public network and spread around the globe. With such kind of accessibility there needs to be a source that protects information on the web and secures it from being misused. In addition, Internet also provides facilities to transfer and communicate information or any other data from one end to other. Especially in such kind of situations it is required to have a security system that provides confidentiality and privacy to the communication or transferring process.

There are several ways in which security is established over the internet. Encryption is one of the ways. Encryption involves encoding the information in a way that only a particular system with the decoding key can decode and use it. Now a days there has been a lot of cases where E mails on the internet are sent with viruses on them. Just as viruses work to infect human body, computer viruses (which is a computer program) are able to replicate their structure and infects the computer system that you are using by attacking your files or system structure. This is done by hackers who seek to take over control on a computer system and extract valuable information. Apart from viruses there are several other types of malicious programs like Trojan horse, Malware, Spyware, worms etc.

To prevent our computer systems from such infectious software we generally download Anti virus or a firewall on our computer hard disk. These are security programs that block such malicious programs from attacking any files or content on our system and acts as a protective sheet for the system.

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Questions:- 1)How does Cloud Computing Security implemented?

2)What language is used best for programming Anti virus and firewall software?