1. Computer Security Presented By : Ebtihal Mohammed AL-Amro

2. Introduction IIn this presentation I’ll explain to you The Principal Threats that affect on your computer and how can protect our computers from these threats, and how can we deal with it.

3. Computer Security CComputer security is the process of preventing and detecting unauthorized use of your computer. Prevention measures help you to stop unauthorized users (also known as "intruders") from accessing any part of your computer system.

4. The Principal Threats Hacking 1 Viruses 2 Spam 3 Spyware 4

5. Hacking ““Illegally accessing other people's computer systems for destroying, disrupting or carrying out illegal activities on the network or computer systems”

6. Hacking Examples Worm worms are programs which reproduce by copying themselves over and over, using up resources and sometimes slowing down the systems Logic Bomb Code which will trigger a particular form of 'attack' when a designated condition is met. For instance, a logic bomb could delete all files on Dec. it does not make copies of itself It is a program which does an unauthorized function, hidden inside an authorized program. It does something other than what it claims to do, usually something malicious Trojan Horse

7. Viruses SS oftware programs capable of reproducing themselves and usually capable of causing great harm to files or other programs on the same computer.

8. Spam IIs an unsolicited mail message offering goods or services often with immoral content.

9. Spyware CComputer programs that gathers and reports information about a computer user without the user's knowledge or consent.

10. 7 Tips to Protect your computer 7 Tips  Use an Internet “firewall”   Keep your operating system up to date   Install and maintain antivirus software   Install and maintain antispyware software  Back up your important files and information  Use hard to guess Password  Think before you click

11. Use an Internet firewall AA firewall is software or hardware that creates a protective barrier between your computer and potentially damaging content on the Internet or network.

13. Keep your operating system up to date IInstall all security updates as soon as they are available. AAutomatic updates provide the best protection.

14. Install and maintain antivirus software AAntivirus software can detect and destroy computer viruses before they can cause damage yyou should to keep the antivirus software up to date to be effective Don’t let it expire

15. Some Antivirus programs

16. Install and maintain antispyware software UUse antispyware software so unknown people cannot lurk on your computer and potentially steal your information.

17. Back up your important files and information YYou can use the backup utility in Windows to copy the important files and data on your hard drive and archive it on another hard drive, a disk, a CD, a DVD, or another computer. If your hard drive is erased or damaged, you can easily restore the data from the archived copy.

18. Use hard to guess Password SS implest and most common way to ensure that only those that have permission can enter your computer or certain parts of your computer network. VV irtually ineffective if people do not protect their passwords. TT he golden rules, or policies for passwords are: MMake passwords as meaningless as possible CChange passwords regularly DDon’t let any one knows your password

19. Think before you click DD on’t open e-mail attachments unless you know what they contain and who sent them. OO nly download files from websites you trust. AA lways use the red “X” in the corner of a pop-up screen. Never click “yes,” “accept” or even “cancel”, because it could be a trick that installs software on your PC.

20. References  Six steps to computer security HP.com  10 tips to computer security By Cheryl Allebrand Bankrate.com  Simple Steps to Protect Your Computer By Rick Hellewell DigitalChoke.com  Internet Security Threats Lexicon By xtra Tiny