Your website will have most of its protection from your hosting company. They are picky about what programs you add to their servers so blocking a attack on your webpage is up to your hosting company. As for your own personal computer is where you can prevent things from happening. Even if you are not being attacked there can be programs and scripts on your personal pc that allow it to be used to attack other computers and webpages. The way it seems prosecution works on these cases is it is up to you to prove you where hijacked and did not attack sites or personal computers. This is a better safe then sorry preventive measure. If you are using Microsofts fire wall you are at risk. Microsoft is the most hacked software on the internet.

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