What Are Various Internet and Network Attacks, and How Can Users Safeguard against These Attacks?
A computer virus is a potentially damaging program that affects, or infects, a computer negatively by altering the way the computer works without the user’s knowledge or permission. A worm is a program that copies itself repeatedly, using up resources and possibly shutting down the computer or network. A Trojan horse is a program that hides within or looks like a legitimate program. A rootkit is a program that hides in a computer and allows someone from a remote location to take full control of the computer. To take precautions against this malware, do not start a computer with removable media in the drives or ports. Never open an e-mail attachment unless you are expecting the attachment and it is from a trusted source. Disable macros in documents that are not from a trusted source. Install an antivirus program and a personal firewall. Stay informed about any new virus alert or virus hoax. To defend against a botnet, a denial of service attack, improper use of a back door, and spoofing, users can install a firewall, install intrusion detection software, and set up a honeypot.