The minute your computer starts acting weird, you will be suspecting a virus to be the culprit. However, a virus isn’t the only dangerous malware around. Aside from viruses, worms and Trojans can also cause your PC to go haywire. If you haven’t had a good introduction to these unwanted cyber guests, the following lines will do the trick.
A computer virus is a small program which attaches itself to a file or program. It then replicates itself on all the files of that PC before spreading to others through flash disks and even email. Sometimes a virus can be annoying rather than harmful so, it won’t destruct your files (although the same may not apply to your nerves). At other times, however, it can infect your computer badly.
A worm is quite similar to a virus as it can spread easily. However, doesn’t require your involvement as it can send itself. If you’re wondering about whether a worm or a virus is causing mayhem on your PC, one way of identifying worms is by finding out if your system’s memory or network bandwidth is being used excessively. You may also be having problems with connecting to your network server because of this.
As for a Trojan, it works on the same methodology of the Trojan Horse. At first it will appear as a legitimate, useful program. However, once you install it, it can either annoy you so much or cause the loss of data. In addition, a Trojan will create a backdoor on your PC so that hackers and intruders can access your system and data. Trojans can be used to steel financial information, and even aid in identity theft. Unlike the other two, Trojans do not replicate, period.
So, rather than blame every mishap on a virus, you now know that there are more suspects to point your finger at.
