1. Computer Viruses
The Basics

2. What are Computer Viruses?
 Codes written by programmers
 Replicate within the host computer
 Spread via cyber-contact
 E-mail
 Downloads
 Networking
 Can be both malicious or benign
 Have the potential to cause serious damage

3. How do Computer Viruses
Spread?
 Opening infected e-mail attachments
 Accepting file transfers
 Trojan or worm delivery
 Downloading infected programs or files from the
internet, burned discs, USB flash drives, or other
removable media

4. How do Computer Viruses
Spread? (cont)
 Downloading or using pirated
programs, images, movies,
music, or other files that are
infected
 Downloading programs that
come with add-ons that contain
viruses
 Infected Computer networks

5. What are the Symptoms?
 Unstable functioning of systems or programs
 Corrupted files and data
 Missing programs or files
 Appearance of unknown programs or files

6. What are the Symptoms? (cont)
 Fake anti-virus pop ups
http://www.gamefreakzweb.com/2010_04_01_archive.html

7. What are the Symptoms? (cont)
 Missing desktop icons
 Operating system fails to boot
 Error messages
 Disk space full
http://blog.superuser.com/2012/02/17/wtfriday-what-happens-when-windows-runs-out-of-disk-space/

8. What are the Symptoms? (cont)
 Programs fail to launch
 Websites are redirected or blocked
 Genuine anti-virus company websites are blocked
 Slow PC speed

9. What are the Symptoms? (cont)
 Operating system crashes
The Blue Screen of Death
http://the-black-wolf-co-uk.deviantart.com/art/The-Blue-Screen-Saver-of-Death-47473826

10. Computer Viruses
Works Cited
Blue Screen of Death. PNG. <http://the-black-wolf-co-uk.deviantart.com/art/The-Blue-Screen-
Saver-of-Death-47473826>
Edison, George. disk_properties. PNG. <http://blog.superuser.com/2012/02/17/wtfriday-what-
happens-when-windows-runs-out-of-disk-space/>
OCAL. Compact Disc 2. Rolera, LLC.PNG. < http://www.clker.com/>
OCAL. Computer Virus Character. Rolera, LLC.PNG. < http://www.clker.com/>
OCAL. Cassette Bones. Rolera, LLC.PNG. < http://www.clker.com/>
OCAL. Firefox. Rolera, LLC.JPG. < http://www.clker.com/>
OCAL. Mail Attachment. Rolera, LLC.PNG. < http://www.clker.com/>
OCAL. USB Thumbdrive. Rolera, LLC.PNG. < http://www.clker.com/>
Saadi. Search. Rolera, LLC.PNG. < http://www.clker.com/>
Tina. Example 1. Game FreakZ. PNG. <http://www.gamefreakzweb.com/
2010_04_01_archive.html>
Tina. Example 3. Game FreakZ. PNG. <http://www.gamefreakzweb.com/
2010_04_01_archive.html>