Ive recently thrown together a website to sell a product ive designed.
Since im a total newb to web design i would appreciate if anyone could advise on security measures to implement on my website.

Ive designed the site with *cough*Frontpage*cough* and am using a company to host the site.

I decided on this due to reliability, as if, for any reason, my box went down the site would obviously go down.

Thanks in advance for any advise given