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VerifyClient
Last update:
May 18, 2026
Description
Requires remote invocations of the page or calls to functions on the page to include an encrypted security token.
Returns
Does not return a value.
Category
Function syntax
VerifyClient()See also
cffunction, Improving security in Ajax programming rules and techniques in the Developing ColdFusion Applications
History
ColdFusion 8: Added this function.
Parameters
Does not take any parameters
Usage
Use this function to help prevent security attacks where an unauthorized party attempts to perform an action on the server, such as changing a password. As a general rule, use this feature for Ajax requests to the server to perform sensitive actions, such as updating passwords.If you call this function, you must enable client management or session management in your application; otherwise, you do not get an error, but ColdFusion does not verify clients. Use this function only on pages that respond to client-side ColdFusion Ajax features, such as bind expressions. These features include code that correctly sends the security token when needed.
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