DEFINITION OF VIRUS A virus is an infectious program which affects computer systems and data. Viruses are spread to any other programs they contact, thus being infectious. A virus will attach a copy of itself to an executable program. Usually attaches with .doc,.xls and exe extensions
TYPES OF VIRUS Worm Trapdoor Backdoor Trojan Horse Salami Attack Logic Bomb Internet time theft
TROJAN HORSE A program in which malicious or harmful code is contained inside apparently harmless programming or data. The software initially appears to perform a desirable function for the user prior to installation and/or execution.Trojan Horse attacks pose one of the most serious threats to computer security.
TYPES OF TROJAN HORSE Remote Access Trojan Data Sending Trojan Proxy Trojan Destructive Trojan FTP Trojan Denial-of-service attack(DoS)
SALAMI ATTACK A salami attack is a series of minor data- security attacks that together results in a larger attack. Crimes involving salami attacks typically are difficult to detect and trace. The salami technique can also refer to aggregating small amounts of information from many sources to derive an overall picture of an organization.
HOW TO COMBAT VIRUS Ensure that your operating system is up- to-date. Have an antivirus installed on your system and ensure you download updates frequently to ensure your software has the latest fixes for new viruses, worms, and Trojan horses. Install a firewall to prevents unauthorized use and access to your computer.
CONCLUSION Viruses are dangerous. You can maintain a relatively safe computer with a little bit of understanding and vigilance. Research any new viruses you hear about to make sure that the threat is real.
SOURCES http://www.support.psi.com/support/spart/virus.ht ml http://www.webopedia.com/DidYouKnow/Internet/ 2004/virus.asp http://virus-informati0n.blogspot.com/ An Introduction To Keylogger, RATS And Malware written by Rafay Baloch Teacher’s Handouts:Introduction to Information and Communication Technology
Group Members:Neville Quinn James(4F)Muhd Saiful Nizam(4F)