Php script against Web scanners

It is difficult for us to ensure the security of a Web program, because the ghost knows what new vulnerabilities will emerge tomorrow, and the ghost knows whether a module is written by a security-free programmer. Most Web scanners (including the upload and Management backend scanners) determine whether a page exists by judging the HTTP 200 return, these scans start to scan vulnerabilities. Since internal logic cannot be strictly controlled, let's talk about the bottleneck of input/output. when incorrect passwords or permissions fail to be entered, we will return an HTTP message of 400 error to mislead the scanner to stop scanning (including which Manual intruders)
Take PHP as an example:

The code is as follows:

Ob_start ();
If ('password '! = $ _ GET ['password'])
Header ("HTTP/1.1 404 Not Found ");
?>



Sample