MALUTI TVET BETHLEHEM COMPUTER PRACTICE N6 By CF Brand TOPIC 3: COMPUTER VIRUSES COMPUTER PRACTICE N6 By CF Brand What is a computer virus? A computer virus is a malicious software program loaded onto a users computer without the users
"MALUTI TVET BETHLEHEM COMPUTER PRACTICE N6 By CF" is the property of its rightful owner. Permission is granted to
download and print the materials on this website for personal, non-commercial use only, and to display it
on your personal computer provided you do not modify the materials and that you retain all copyright
notices contained in the materials. By downloading content from our website, you accept the terms of this
agreement.
Presentation Transcript
01
MALUTI TVET BETHLEHEM COMPUTER PRACTICE N6 By CF Brand<br>
02
TOPIC 3: COMPUTER VIRUSES COMPUTER PRACTICE N6 By CF Brand<br>
03
What is a computer virus? A computer virus is a malicious software program loaded onto a user's computer without the user's knowledge and performs malicious actions. CP N6 TOPIC 3 VIRUSES 3 This Photo by Unknown Author is licensed under CC BY-SA<br>
04
TYPES OF VIRUSES CP N6 TOPIC 3 VIRUSES 4 WHAT IS A WORM VIRUS?
A computer worm is a type of malware that spreads copies of itself from computer to computer.
EXAMPLES: Michelangelo, ILOVEYOU
WHAT IS A BOOT SECTOR VIRUS?
a PC virus that infects storage devices and/or master boot record of hard disks.
EXAMPLES: Michelangelo, Stoned
WHAT IS A DIRECT ACTION VIRUS?
A direct action virus is a type of file infector virus that works by attaching itself to an .exe or .com file when installed or executed.
EXAMPLES: Virdem, Vienna
WHAT IS A TROJAN HORSE?
A Trojan horse, or Trojan, is a type of malicious code or software that looks legitimate but can take control of your computer.
EXAMPLE: Zeus<br>
05
Top 5 Most Destructive Computer Viruses of All Time #1 ILOVEYOU. This is one of the first major, and still most damaging, computer virus ever created. ...
#2 Melissa. This virus was created by David L. ...
#3 Code Red. ...
#4 Sobig Worm (Sobig. ...
#5 Mydoom. ... CP N6 TOPIC 3 VIRUSES 5<br>
06
SYMPTOMS OF A VIRUS INFECTION ON YOUR COMPUTER Unexpected pop-up windows. Unexpected onscreen ads are a typical sign of a virus infection. ...
Slow start up and slow performance. ...
Suspicious hard drive activity. ...
Lack of storage space. ...
Missing files. ...
Crashes and error messages. ...
High network activity. ...
Email is hijacked.
(choose 5) CP N6 TOPIC 3 VIRUSES 6<br>
07
STAGES OF A COMPUTER VIRUS CP N6 TOPIC 3 VIRUSES 7<br>
08
MEASURES TO PREVENT VIRUS INFECTION ON YOUR COMPUTER Install an anti-virus program and update it regularly.
Do not use any foreign disks in your computer.
Avoid downloading files from the Internet.
Control the access to computers.
Do a virus test regularly.
Do not use illegal software.
(choose 5) CP N6 TOPIC 3 VIRUSES 8<br>
09
MORE INFO ON VIRUSES: What is a VIRUS HOAX?
A virus hoax is a false warning about a computer virus. This warning usually arrives in an e-mail message.
Why is it important to update your anti-virus software regularly?
Computers are regularly threatened by new viruses. The anti-virus updates contain the latest files needed to combat new viruses and protect your computer. CP N6 TOPIC 3 VIRUSES 9<br>
10
Anti-virus Programs CP N6 TOPIC 3 VIRUSES 10 Antivirus software is a program or set of programs that are designed to prevent, search for, detect, and remove software viruses, and other malicious software examples<br>
11
CP N6 TOPIC 3 VIRUSES 11 This Photo by Unknown Author is licensed under CC BY-SA<br>
