- Cant change my homepage
- Connects to the internet without permission
- Installs itself without permissions
- Shows commercial adverts
- Slow Computer
- Slow internet connection
- System crashes
Nimda is an infamous computer worm that spreads itself by sending copies of itself over a network. This worm was first released in September, 2001 and it is active even up until now. It is a complex computer infection that has features of a mass mailing worm. As a result, it can spread as a spam email attachment, affecting users of various versions of Windows. What is more, Nimda is able to exploit the Unicode in order to infect IIS web servers. However, this security loophole can be fixed with a Microsoft patch.
Spam email is not the only mean of delivery that Nimda utilizes. It can also modify websites in a way that they end up offering the infected file for download. Thus users unwittingly get infected with Nimda while browsing the internet. Once Nimda worm gets inside the system it locates .exe files and infects them, basically "assimilating" them, so when people share these files (like games, for example) Nimda spreads even further.
Just like most of the infections Nimda worm performs particular system changes that allows it to start together with Windows. It also can communicate over the network with remote systems, looking for other places to spread. Do not be fooled! Despite the fact that Nimda worm does not infect computer files directly, it is can easily spread on its own accord (unlike a Trojan, for example), and so it is a dangerous computer infection that has to be stopped immediately.
You also cannot see any unfamiliar files in your system, because Nimda worm affects the Windows Explorer properties in a way that it tampers with the Windows ability to show files - Nimda worm successfully hides its won files from the view. One thing that should be obvious in case of Nimda worm's infection is the creation of an additional "guest" account on the system's account list. The worm activates it and disables sharing security.
Removing Nimda worm on your own is quite a challenge, so inexperienced users are not advised to try doing that. You should acquire a powerful antimalware program that will perform a full system scan on your computer and then terminate Nimda worm automatically. You will not have to worry about it any longer, because the program will also protect your system from any other possible threats.