Computer security deals with data protection on a standalone computer or a network of computers. With the increase in the development of malware and the expansion of the computer network layers so rapidly, the security levels also need to be constantly upgraded to ensure that the data storage is robust and safe.

Data is primarily protected by authorizing user access through passwords or encrypted data transfer. However, if such confidential data leaks out, the security of the system is highly at stake. Hackers can intrude into the system if they can somehow decode the encryption format or get access to the password through unethical means.

The following are some of the common security threats in a computer network:

• Trojan Horse: These malicious programs are commonly developed by hackers to gain unauthorized access into private networks and acquire complete remote access of a computer.
• Denial of Service: Hackers can bring a huge computer network to a complete standstill by gaining unauthorized into the network and disabling certain important services.
• Viruses and Worms: They are dangerous programs that can self-replicate and spread to other computers in the network.
• Sniffing: In this case, the hacker eavesdrops and interprets the network packets during data transfer.

Data loss occurs not only in computer networks but also in stand-alone computers. For example, hard disk crashes may result in irrecoverable damage resulting in data loss. Hence, it is necessary to take regular backups, rewritable as well as permanent storage mediums.

In addition, one has to ensure that the antivirus software is regularly updated in order to protect the computer from being hacked.

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Computer security deals with data protection on a standalone computer or a network of computers. With the increase in the development of malware and the expansion of the computer network layers so rapidly, the security levels also need to be constantly upgraded to ensure that the data storage is...