Any tips on Free ways to protect your Website??

[FlawlessHappiness]

Sure, it's off-topic, but this forum, in general, is for fans of the games from Frictional Games.
So the chances of a member having experience with opening an online shop is pretty slim, since the forum is not about business at all.

I think, if you need help with your problem I would look into a forum that knows more about this. Perhaps Reddit has a good subreddit for this.