Answers:
A worm is a type of programme that replicates itself and sends itself on to other contained by your address book. It doesn't infect or corrupt files approaching a virus but does use up bandwidth. Worms other spoil the meet people as a consequence can be specific nuiscance for huge companies and councils next to networks. On your PC at home it will only affect your download speeds.
You should never plain attachments that are surrounded by emails from unknown senders. Thats how they usually spread. Best entry to do is contact your ISP or your software provider. Often they will own what are call patch for your software. Download the up-to-the-minute patch and purloin it from here. If the worm have already spread, such as within the defence of a Trojan Horse, afterwards the violate could already be done. You could try a virus scan, and surrounded by worst casing scenario reformat .
Good article on worms:
http://en.wikipedia.org/wiki/computer_wo...
well it's difficult to describe those in freshly a few words, but here's a connect to computer worm description:
http://www.2-spyware.com/worms-removal...
A computer worm is a self-replicating computer program. It uses a gridiron to transport copies of itself to other nodes (computer terminal on the network) and it may do so short any user intervention. Unlike a virus, it does not obligation to attach itself to an existing program. Worms other impair the meet people (if one and only by consuming bandwidth), whereas virus other infect or corrupt files on a targeted computer.