Spam is an unsolicited random e-mail that has been sent without the consent of the recipient.

Malware is the abbreviation for "malicious software". It is the general name given to unwanted and nasty scripts/codes like viruses, trojans etc. Such codes can enter your PC through an attachment of a program, or they can be downloaded unknowingly at the background from a web site you are browsing. Even the updated antivirus software may not always succeed in detecting malware.

Such e-mail messages or software are sent to collect e-mail addresses, passwords or personal information of users to be used for commercial purposes. They can sometimes be sent to capture the information on your PC or to follow up the sites you have visited on the Internet.