Viruses…
Viruses:
- are small software programs that spreads from computer to computer, corrupting or deleting the information you have on the hard disk of your computer.
- you get it by emails, IMs, pictures, greeting cards, and audio and video files.
- you also get it by downloading a file or program on the Internet.
- it gets a “piggyback” ride from the file/program you are using.
- everytime you use that file/program, the virus runs!
- to avoid it, use an Internet Firewall and update your latest antivirus softwawre.
- needs a host program to run.
http://www.microsoft.com/protect/computer/basics/virus.mspx
http://www.howstuffworks.com/virus.htm
http://www.microsoft.com/protect/computer/viruses/prevent.mspx
Trojan Horses:
- a computer program that does damage to your computer when you run it.
- it can also erase your hard disk.
- does not replicate
- types such as Remote Access Trojans (RATS), backdoor Trojans (backdoors), IRC Trojans (IRCbots), and keylogging Trojans.
- can be both types.
- if file is affected by a Trojan Horse and detected by an antivirus software, you should DELETE the file.
you know your infected when your computer starts acting weird, such as:
- your CD-ROM drawer opens and closes automatically
- the pc screen flips (upside down or invert)
- the wallpaper or background settings change by itself
- your printer prints documents or messages automatically
- computer browser suddenly goes to unknown site.
- your windows color + screen saver settings change by itself
- your mouse starts acting weird: it might reverse its button functions, its pointer might disappear or leave trials, or even move without you moving it.
http://antivirus.about.com/b/2006/05/31/whats-a-trojan-horse-virus.htm
http://hacker-eliminator.com/trojansymptoms.html
Worms:
- can run by itself without a host program
- are “malicious software applications designed to spread via computer networks.”
- you get it by opening an email attachment or just an email
- once installed, it makes copies of itself and would make an attempt to fill the LAN with DoS (Denail of Service) data transmissions.
- can be fought against by antivirus software.
- can be prevented by using email programs that has spam filters built in, i.e. Outlook Express and Windows Hotmail.
http://www.spamlaws.com/avoid-worms.html
http://www.tech-faq.com/computer-worm-virus.shtml
Phishing:
- also called carding or brand spoofing or identify theft.
- to prevent phishing, use an anti-virus, an anti-spyware software and a firewall, all updated regularly.
- a scam to get your information and money.
- gets it by emails, pop-ups, IMS, and email attachments.
- appeares professiona, business-like from “real” companies and businesses such as banks, Amazon, and Ebay.
http://www.webopedia.com/DidYouKnow/Internet/2005/phishing.asp
http://computer.howstuffworks.com/phishing.htm
http://www.computerworld.com/securitytopics/security/story/0,10801,89096,00.html