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Done By:Salha Mohammed Obaid AL-kaabi ID:201211567

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What is virus? Type of virus Trojan Horses Popular Trojan horses Worm Example of Worm(Code Red) To keep your computer and data secure Type of antivirus software References

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A virus is a small piece of software that piggybacks on real programs. All viruses are attached to an executable file, which means the virus may exist on your computer but it actually cannot infect your computer unless you run or open the malicious program.

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FF ile infector virus IInfect program files BB oot sector virus IInfect the system area of a disk MM aster boot record virus iinfect disks in the same manner as boot sector viruses. MM ulti-partite virus iinfect both boot records and program files MM acro virus iinfect data files. Examples: Microsoft Office Word, Excel, PowerPoint and Access files

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It is a type of malware that masquerades as a legitimate file or helpful program possibly with the purpose of granting a hacker unauthorized access to a computer.

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Netbus (by Carl-Fredrik Neikter) Subseven or Sub7(by Mobman) Y3K Remote Administration Tool (by Konstantinos & Evangelos Tselentis) Back Orifice (Sir Dystic) Beast Zeus The Blackhole exploit kit Flashback Trojan (Trojan.BackDoor.Flashback)

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Small piece of software that uses computer networks and security holes to replicate itself. Copy itself to the new machine using the security hole and start replicating. The worm has been designed to tunnel into your system and allow malicious users to control your computer remotely.

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Code Red made huge headlines in 2001. Code Red designed to do three things: Replicate itself for the first 20 days of each month. Replace web pages on infected servers with a page that declares Hacked by Chinese Launch a concreted attack on the White House Web server

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Four steps to keep your computer and your data secure: 1. Get the latest Anti-Virus Software. 2. Make sure you have the latest security patches and hot fixes using Windows Update. 3. Use a Host-Based Firewall. 4. Back up your Important Files.

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http://www.ust.hk/itsc/antivirus/general/wh atis.html http://www.ust.hk/itsc/antivirus/general/wh atis.html http://www.webopedia.com/DidYouKnow/Int ernet/2004/virus.asp http://www.webopedia.com/DidYouKnow/Int ernet/2004/virus.asp http://computer.howstuffworks.com/virus.htm http://computer.howstuffworks.com/virus.htm