Among the variety of codes or malware there currently are the worms , also called Worms . Such programs are the most common because of its small size but these elements are causing the most problems in the PC and in the network. If not proceed rapidly to clean these malwares can even collapse many sophisticated websites or servers.
The worms are malicious programs and their first goal is to make it multiply resistant to cleaning, because of this feature are renamed multiplication of malicious code to true. At the beginning these worms fail to affect the operating system and try that first and then we will build up causing effects, such as excessive consumption of resources the task manager or virtual memory makes the program implementation process is slower than normal or even until the system crashes; similarly in the network may cause the server becomes overloaded and that navigation is too slow despite the speed it has contracted.
The difference with other viruses is that worms roam the computer without camouflage or hide in packaged software to not run into the antivirus. That's why these worms are the easiest to remove or otherwise also check that your goal is not to harm the system but rather disturbing the user, although there are some worms that have been detected some properties of viruses themselves.
As mentioned before, the biggest problem that can cause these worms after their accumulation, causing the saturation in the network or in the system until it can even block network traffic from overuse of resources operating system and reach hanging the computer normally "solved" by a reset.
These worms can reach computers through emails, P2P, IRC or SMTP, after entering the system this can spread to all contacts of the victim, and automatically send files to download for the chat , giving the impression that the victim is sending.
To clean these worms there are many programs but they must be updated, for example AVG which is very effective and complete scanning the PC, and is free. Another way could be the Antivir which is also free and can destroy any worms and also offers many other immunizations. The Avast is also another option and a similar process as the previous heuristic. Although these are designed to attack antivirus virus, which is why there are programs to eliminate worms particularly like CoolWebSearch and also removes any redundant advertising.
In conclusion, it should avoid opening any file freely packed in RAR or ZIP files, especially those who are sent to e-mail or chat (or Yahoo Messenger), be careful to burn files on USB flash drives as and when connecting the PC can pass it, avoid downloading from unknown sites or use p2p programs. Below is a list of file extensions that could be carrying a worm: ACE, ACV, ACM, ARJ, ASD, ASP, AX, AVB, BIN, BAT 386
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