Before we use Google for intelligence gathering, we should briefly touch upon using Google dorks, which we can use to refine and filter our Google searches. A Google dork is a string of special syntax that we pass to Google's request handler using the q= option. The dork can comprise operators and keywords separated by a colon and concatenated strings using a plus symbol + as a delimiter. Here is a list of simple Google dorks that we can use to narrow our Google searches:
intitle:<string> searches for pages whose HTML title tags contain the string <string>filetype:<ext> searches for files that have the extension <ext>site:<domain> narrows the search to only results that are located on the <domain> target serversinurl:<string> returns ...No credit card required