Here is a list of illegal bypasses which stupid hackers uses to shell sites

Here is a list of illegal bypasses which stupid hackers uses to shell sites:

This is dropped just to knw how to protect you site from external hackers.

shell.jpg.php (satisfies as check for jpg only)
shell.jpg.PhP (obfuscation)
shell.php;.jpg (sometimes can ignore
whats after ";")
shell.php%0delete0.jpg (the infamous
NULL byte which comments out trailing text, remove the word delete so the
zeros join together, blogspot strips this string!)
shell.php.test (defaults to first
recognised extension ignoring "test")
shell.php.xxxjpg (still ends in .jpg, but not recognised extension so will default to php!)