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Viruses, Worms and Trojans

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Kamil Narimanov

on 12 December 2013

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Transcript of Viruses, Worms and Trojans

What is a worm?
What is a Trojan Horse?
Trojan Horse
is a malicious software program that hides inside other programs and puts code into the operating system that enables a hacker to access the infected computer.

Tips for preventing VIRUS, WORM and TROJAN

HORSE infections.
Never click on a link or attachment in an email that you are not positive is from a trusted source.
Be wary of files with a double extension such as .txt.vb or .jpg.exe
Use USB drives with caution.
Beware of internet pop-ups.
Beware of unusual emails from companies you do business with.
Install an anti-virus program.
Set up your Windows Update to automatically download patches and upgrades.
Consider switching to a different web browser.
Google it.
Limit the people you allow to remotely control your computer.
What is a computer virus?
computer virus
is a small software program that spreads from one computer to another and interferes with computer operation.
is a small piece of software that uses computer networks and security holes to replicate itself.
A copy of the
scans the network for another machine that has a specific security hole.
It copies itself to the new machine using the security hole, and then starts replicating from there, as well.
Trojan Horses
do not usually spread by themselves.
They are spread by viruses, worms, or downloaded software.

How does a computer virus find me?
Sharing music, files or photos with other users
Visiting an infected Web site
Opening spam email or an email attachment
Downloading free games, toolbars, media players and other system utilities
Installing mainstream software applications without fully reading license agreements

What does a computer virus do?
Some computer viruses are programmed to harm your computer by damaging programs, deleting files, or reformatting the hard drive.
Others simply replicate themselves or flood a network with traffic, making it impossible to perform any internet activity.
Even less harmful computer viruses can significantly disrupt your system’s performance, sapping computer memory and causing frequent computer crashes.
What are the symptoms of a computer virus?
Slow computer performance
Erratic computer behavior
Unexplained data loss
Frequent computer crashes

Computer viruses
do billions of dollars in damages disrupting productivity.
You need to be careful when checking the mail, going on suspicious site or clicking the button to "download". Nowadays more and more
free antivirus
software is becoming available, because every day the new
is born and it become stronger and more dangerous. If you do all the tips from presentation you will be safe and happy :)

Viruses, Worms and Trojans
Kamil Narimanov and Jushin Baeg

Q129972. "How to Prevent and Remove Viruses and Other Malware." How to Prevent and Remove Viruses and Other Malware. Microsoft, 12 July 2013. Web. 2 Dec. 2013.

Brain, Marshall. "How Computer Viruses Work." HowStuffWorks. HowStuffWorks, Inc, 21 May 2013. Web. 2 Dec. 2013.

"Computer Virus Information." Computer Virus Information. Webroot Inc, 16 Mar. 2013. Web. 2 Dec. 2013.

Gehringer, Edward F. "Worms Viruses Trojans." Worms Viruses Trojans. NC State University, 8 July 2013. Web. 2 Dec. 2013.

"Security News." Security News. PC Tools, 14 June 2013. Web. 2 Dec. 2013.

"Cookies Turned Off." Antivirus Software and Internet Security For Your PC. McAfee, Inc., 19 Aug. 2013. Web. 2 Dec. 2013.

Valkovski, Bob J. "Tips for Preventing VIRUS, WORM and TROJAN HORSE Infections by Bob J. Valkovski." Tips for Preventing VIRUS, WORM and TROJAN HORSE Infections by Bob J. Valkovski. BVTech, Inc., 3 Sept. 2013. Web. 2 Dec. 2013.

"How to Avoid Getting a Computer Virus or Worm on Your Windows PC." WikiHow. Ed. Me@suzann.com, Frances Rhea, James Quirk, Tom Viren and 72 Others. Mediawiki, 22 Feb. 2013. Web. 2 Dec. 2013.

Thank you for your attention!
Any questions?
Full transcript