Patent ID: 8850580

Claim:
A method in a validating server for validating visitor Internet-based security threats, comprising: receiving from a first client device a first request that does not include a cookie for a validating domain that resolves to the validating server, wherein the first request is received as a result of a proxy server redirecting a second request from the first client device to the validating domain upon a determination that a visitor belonging to the first client device is a potential threat based on an IP (Internet Protocol) address assigned to the first client device used in the second request to perform an action on a first identified resource hosted on an origin server for an origin domain; setting a first cookie for the first client device; determining a set of one or more characteristics associated with the first client device; and transmitting a block page to the first client device that has been customized based on one or more of the set of characteristics including explanatory text that explains that the second request has been blocked and a reason why the second request has been blocked, wherein the block page includes a mechanism to dismiss the block page, and wherein the block page is not the first identified resource; and upon a successful dismissal of the block page, indicating in the first cookie a successful dismissal of the block page and transmitting the first cookie to the first client device.