There are many types of malicious software, outside of your typical viruses, attack systems every day. The following sections outline other types of malicious software but understand that they are all considered types of viruses.
Trojan horses
Trojan horses virus are special designed and bundled in an exe file, when some one click on this exe file then it executes the virus program and takes control of the system. For example, NetBus is a very popular Trojan virus that ships as a file called patch.exe. A hacker e-mails the file called patch.exe and explains in the e-mail that this is a security patch you need to apply to make sure your system is secure. Unfortunately, patch.exe is the security hole! When you run patch.exe, it opens your system up to the hacker by opening a port so that the hacker can connect to the port at any time and control your system. Trojan viruses are normally loaded on your system by the hacker tricking you into running the program on the system. You can remove the Trojan with virus-protection software.
Worms
A worm is a self-replicating virus. By self-replicating, I mean that the worm doesn't need to be activated by the user opening the file. A worm is a virus that runs on a system and also tries to infect other systems on the network. The Nimda virus is an example of a worm virus. Worms are loaded on your system by connecting to your system from across the Internet. The worm is usually designed to infect the system by connecting through a specific piece of software.
Spyware and adware
Spyware is software that loads on your system and then monitors your Internet activity, while adware is software that creates pop-ups from time to time advertising a particular product or service. Both of these types of viruses infect your system when you surf the wrong Internet site. Spyware and adware have become a huge negative result of the Internet, so a number of products are available to eliminate spyware and adware.
The most popular products used to eliminate spyware and adware are:
Trojan horses
Trojan horses virus are special designed and bundled in an exe file, when some one click on this exe file then it executes the virus program and takes control of the system. For example, NetBus is a very popular Trojan virus that ships as a file called patch.exe. A hacker e-mails the file called patch.exe and explains in the e-mail that this is a security patch you need to apply to make sure your system is secure. Unfortunately, patch.exe is the security hole! When you run patch.exe, it opens your system up to the hacker by opening a port so that the hacker can connect to the port at any time and control your system. Trojan viruses are normally loaded on your system by the hacker tricking you into running the program on the system. You can remove the Trojan with virus-protection software.
Worms
A worm is a self-replicating virus. By self-replicating, I mean that the worm doesn't need to be activated by the user opening the file. A worm is a virus that runs on a system and also tries to infect other systems on the network. The Nimda virus is an example of a worm virus. Worms are loaded on your system by connecting to your system from across the Internet. The worm is usually designed to infect the system by connecting through a specific piece of software.
Spyware and adware
Spyware is software that loads on your system and then monitors your Internet activity, while adware is software that creates pop-ups from time to time advertising a particular product or service. Both of these types of viruses infect your system when you surf the wrong Internet site. Spyware and adware have become a huge negative result of the Internet, so a number of products are available to eliminate spyware and adware.
The most popular products used to eliminate spyware and adware are:
- Spybot Search & Destroy
- Ad-Aware
- Microsoft’s Windows Defender
