Malware

E-mail attachments who carry malware can harm the computer. Malware or malicious software plays crucial role on internet. Malware can slow down the speed of computer and  consumes bandwidth. It includes computer viruses, macro,worms, Trojan horses, spyware, adware and other malicious programs. In law, malware is sometimes known as a computer contaminant.Some computers have at least some anti-malware software that is already installed, such as an anti-virus program. Make sure the program’s anti-virus database is updated before starting. Some malware programs are disguised as anti-spyware, so use a program recommended and hosted by a well-established sites such as PCWorld, MajorGeeks etc.

Malware Remover:

All users must download the software, run a scan and then instruct the software to remove the offending trackers and other forms of malware found on the hard drive. Today it is not unusual to find system clean-up tools that conduct malware removal along with spyware removal and computer virus removal at the same time.

Many anti-virus programs now add protection against it, but people commonly use anti-virus program with a separate malware cleaner to detect, remove and prevent these threats.

The above video tell us about symptoms of Malware which can help us to understand how to avoid Malware. 
Discussion/ your views
what is difference between Macro and Worm??

The link below give you more information about Malware, check out this to know more. 
http://en.wikipedia.org/wiki/Malware

http://en.wikipedia.org/wiki/Malware