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I have heard of hardware firewalls, but not hardware virus scanners. Do they exist? And if not, why not?

I found this site that explains the basics of public key cryptography, private keys, digital signatures, certificates and authentication.

Hope some people find this as useful as I did.

Cheers

Would a Java program on a mobile have permission to access files like that?
Do mobiles run stand-alone Java applications or just applets?

I am only asking because I know Java was designed with...

How possible would it be for a virus or worm to target online gaming consoles such as XBox or Playstation2?

I remember reading somewhere that early viruses were designed to do maintenance across networks.

After doing a Google search i found this page

http://www.cknow.com/vtutor/vtgood.htm



My...