“Alert: Suspicious Request Detected – Potential Security Threat Unveiled!”

A potentially hazardous Request.Path value was flagged from the client (?).

Description: An unhandled exception arose during the processing of the ongoing web request. Please examine the stack trace for additional details regarding the error and its source in the code.

Exception Details: System.Web.HttpException: A potentially hazardous Request.Path value was flagged from the client (?).

Source Error:

Stack Trace:

[HttpException (0x80004005): A potentially hazardous Request.Path value was flagged from the client (?)]
   System.Web.HttpRequest.ValidateInputIfRequiredByConfig() +570
   System.Web.PipelineStepManager.ValidateHelper(HttpContext context) +54