Patent ID: 8548917

Claim:
A system, comprising: one or more computers configured to implement a server-based frame detection system, wherein the frame detection system comprises: a web server module configured to: generate a product page comprising a child iframe, wherein the child iframe comprises a uniform resource locator (URL) for a component from a merchant, wherein the URL comprises a nonce value, and wherein the child iframe comprises a header option preventing issuance of a request for the component from within an external parent frame associated with a domain external to the merchant; and send the product page from the merchant to a client browser; complete a transaction between the merchant and the client browser for a sale of an item offered on the product page; and a frame detection module configured to: detect that the product page is loaded within the external parent frame in the client browser if the request for the component and the nonce value are not received by the merchant; and detect that the product page is not loaded within the external parent frame in the client browser if the request for the component and the nonce value are received by the merchant.