[SOLVED]]How to debug hack attempt

[jnktaylor]

Been working on our website the past few days trying to resolve various issues and just noticed
that if I log in I get a Hack Attempt. It appears to be coming from the cart module since the cart
is never displayed.

How do I debug this to determine where the hack attempt if coming from?

Thanks
Jack

[jnktaylor]

Update: If I log in with an empty cart, it gets a hack attempt before displaying the blockcart.
If I add an item to the cart then log in, no hack attempt.

Jack

[tomerg3]

I usually start printing little debug statements, even just numbers (1 , 2 , 3 etc..) and narrow it down to find out exactly where the page breaks (and displays the hack attempt).

[jnktaylor]

Well it took awhile but I think it is fixed. Started out by disabling modules and narrowed it down to the
new products module. By inserting debug strings, I tracked it down to the Tax class. In my attempt
to test the checkout process, I changed addresses on the test account several times. Something got messed up in the
address table and it couldn't determine if tax was required. I deleted all the old addresses from address table except one
and it is working.

Thanks
Jack

[rocky]

If your issue is resolved, please edit your first post and add [sOLVED] to the front of the title.