Network Security Threats

Worm

A computer worm is a stand-alone malware program which replicates itself and spreads to other devices via network by utilizing vulnerabilities on the target devices. Unlike a computer virus, it does not need to attach itself to an existing program. Worms are usually made to harm the network by consuming bandwidth, whereas viruses usually corrupt or modify files on a targeted device.

Virus

A computer virus is a program that can replicate itself and spread from one computer to another. Viruses increase their chances of spreading to other computers by infecting files on an NFS or a file system that is accessed by other computers. Recently, viruses are distributed mainly to exploit personal computers for distributed denial-of-service (DDoS) attacks.

DDoS

A denial-of-service attack or DDoS attack is an attempt to make a computer or network resource unavailable to its users. Attackers typically target web sites or services such as search engines, banks, credit card payment gateways, and even servers in national security agencies. DDoS attack overloads and saturates the target machine with external communication requests, such that it cannot respond to legitimate traffic, or responds so slowly as to be rendered effectively unavailable.

Posted By Lotfi Ben Taleb

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