A security device may receive a response associated with a request. The response may include original session information. The request may be associated with a user device. The security device may modify the original session information to create modified session information. The security device may store information associated with the modified session information. The security device may provide the response, including the modified session information, to the user device. The security device may receive another request. The other request may include the modified session information. The security device may determine that the modified session information is not current session information based on the information associated with the modified session information. The security device may provide the other request without including the original session information.