will this mod help in tracking who is doing what at my zc 1.5.1 site? Reason I am asking this is because I notice some really strange behaviors on my site. I can see some ip's in my "Whos Online" page in admin, that some ip's are able to put ridiculous quantities of an item in their shopping cart such as 5000000000 units will I have less than a 100 units in stock in the quantity of that one item.

Does zencart prevent a larger then inventory quantity be added to the shopping cart? it seems like some of these ips' are trying to block my traffic. I want to find out who they are, what exactly are they doing, and be able to block them.

any help is appreciated.