Access database security…?

Hi all, I apologize for the newbie question, but can’t find the info I’m looking for anywhere. I’m building my first web application, and have an Access database I want to connect to. The database contains somes tables of information that I want to make sure stays secure (customer addresses, cc #’s, etc.); at the same time, I want to be able to plug some information in on web pages without requiring the user to login, etc. My question is, is there a way to make sure my database stays secure? … and how do I go about doing that? Many thanks for any help and advice you can provide.