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Re: Re: Thwarting Screen Scrapers

by kschwab (Vicar)
on Jul 18, 2002 at 14:54 UTC ( #182834=note: print w/replies, xml ) Need Help??

in reply to Re: Thwarting Screen Scrapers
in thread Thwarting Screen Scrapers

You're right, I haven't included all the details. I was trying to keep this generic enough to apply in more than one situation.

Basically, I'm selling something direct via a website. I have no resellers. A set of people I don't know at all have created their own websites, but they are nothing more than a shell around my website. They make money by adding a "service charge" and billing it to the customer. ( Without adding any apparent value )

They take all the http and https requests from the Customer, via their own forms, and then take the data and make simulated browser requests to my site to make the purchase. Other areas, such as feedback, etc, are directed to my site as well.

They obviously feel they are doing something wrong, since they hide behind unprotected web proxy servers and use other "stealth" techniques to make stopping them difficult.

If it were just one party, a legal approach would work. Unfortunately, this situation happens over and over again, with a different set of front-enders, sometimes with an offshore website.

Replies are listed 'Best First'.
Re: Re: Re: Thwarting Screen Scrapers
by tjh (Curate) on Jul 18, 2002 at 15:22 UTC
    I see (I think). They're processing their own forms (order and payment) themselves, then, in turn, mapping the same sequence on your site. Does this mean that every time an order is made and paid on their site that they cause the same on yours? Are you getting the original customer name, addy, etc., or would you know?

    Real-time detection is possibly the first goal. Unless there is something unique you can detect in the incoming 'ghost' client that you can block with, maybe you can work to detect duplicate payments, shipping addresses etc on the tail of the transaction - which assumes that your new 'partners' are ordering from you then re-shipping to their customer.

    If they are taking the customer data from their own forms and re-submitting it to you, including payment (CC#?) info to you - with a markup - how are they collecting their markup? If they are collecting their full payment using the customer's payment data, THEN resending that same payment data to you, effectively double-billing the buyer, this is a much different type of problem and you should be contacting law enforcement.

    From the looks of your other responses in this thread - methinks you need to do both - tech and legal. If you have a product that is inspiring so much theft/fraud, you need to protect it immediately - but not so protected that it can't be sold at all... :)

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