How can I block specific hacker probing activities in zencart?

Some common attempts to probe your site for old vulnerabilities, or vulnerabilities from other systems, can be blocked by adding the following code to your site:

1. Copy and paste the following code into a new text file in your favorite text-only editor.
2. Save the file as "block_probing.php", and upload it to your store into the following folders:
  a) /your_renamed_admin/includes/extra_configures/
  b) /includes/extra_configures/

$val) {
if (substr_count($lcrequesturi, $val) || substr_count($query, $val) || substr($query, -1) == '?') {
$contaminated = TRUE;
}
}
unset($paramsToCheck, $paramsToAvoid, $key, $val);
if ($contaminated)
{
header('HTTP/1.1 406 Not Acceptable');
exit(0);
}
unset($contaminated);
unset($query2, $query, $querydec2, $querydec, $querydecsws, $useragent, $lcuseragent, $lcuseragentsws, $requesturi, $lcrequesturi, $lcrequesturisws, $lcpost, $lcpostsws);
/* *** END OF INNOCULATION *** */