In URL encoding, %21 represents an exclamation mark ! . So %21%21BETTER%21%21 decodes to:
Bots searching for !!BETTER!! may find directories where filenames include that tag, e.g. Avatar.2009.!!BETTER!!.mp4 Index Of Mp4 %21%21BETTER%21%21
System administrators are warned to disable directory listing for security. But many misconfigured servers leave it on, exposing private or copyrighted MP4 files. In URL encoding, %21 represents an exclamation mark
It is of any legitimate search engine or software. Using it exposes you to legal risks, malware, and surveillance. System administrators should immediately secure any server that logs such queries. In URL encoding