What are some big problems caused by computer malware such as viruses, worms, and trojans?

Please give me a website, if you can. I need it for a project. Also what was the punishment for the person that created the malware?|||Recently, virus writers have been getting jail time. Authorities are getting fed up with it all - the days of treating it as a harmless prank are over.





Some viruses don't really cause much problem. It's the fact that managers don't trust the computers anymore and insist on wiping them and reinstalling that causes all the damage.


Others are deliberately written to cause damage; Stuxnet is the most famous, which is thought to have wrecked Iran's uranium enrichment facility.


Some are designed to capture ID such as credit card numbers, or to send spam, or to start distributed denial of service attacks.|||.





some definations


Virus : This program is dangerous and replicates by infecting other files.





Trojans : This program is dangerous and executes commands from an attacker.





Trojan Monitoring Software : his program is dangerous and records user activity.





Exploit : This program is dangerous and exploits the computer on which it is run.











First viruses cause main problem they use your PC resources excessively results in slowing down your pc... and you will not be able to use single application on your PC





Second it can download other viruses from the internet





Third it can send your private data over the internet





Fourth it can delete your boot information so your computer will not be start at all





and so on..





viruses can do many things which we are not intended to do





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