How Malware Effects the system.........

[nandagopal]

Malware variants have generally been treated as separate individual threats. Today, profit-motivated Web threats blend various malicious software components into a singular Web threat business model. For example, a cyber criminal sends a message (spam) with an embedded link in the email (malicious URL) or contained in an instant message. The user clicks on the link and is redirected to a Web site where a file (Trojan) automatically downloads onto the user's computer. The Trojan then downloads an additional file (spyware) that captures sensitive information, such as bank account numbers (spy-phishing). Although seemingly one incident, blended threats are much more difficult to combat and much more dangerous for the user.