understanding Shodan

understanding Shodan,,,,,,

Search engines are computer programs designed to help someone find the files that are stored in a computer, for example, in a public server on the web (WWW) or the computer itself. The search engine allows us to ask for media content with specific criteria (typically those containing a word or phrase that you specify) and obtain a list of files that meet these criteria. Search engines usually use the index (which was made before and updated on a regular basis) to locate the file after the user enters search criteria.
hodan search engine was originally located at http://shodan.surtri.com/ now this search engine can be accessed at http://www.shodanhq.com, the search engine which was released by John Matherly (http://twitter. com / achillean) is menharuskan us to register before using its search engine, (free & paid) like other search engines,,,,,

example :

apache+country:ID -> akan mencari seluruh komputer yang ada di indonesia yang menjalankan softwere service apache nginx+country:MY ->akan mencari seluruh komputer yang ada di malaysia yang menjalankan softwere/service ngingx   filters 'country' is used to narrow search results by country. This is useful when we want to find a computer in certain countries.,,   net filters 'net' is used to restrict search results to a specific IP or subnet. Using CIDR notation to designate the subnet range. Here are some examples:   216.219.143.14: net:216.219.143.14 216.219.143.*: net:216.219.143.0/24 216.219.*: net:216.219.0.0/16 216.*: apache net:216.0.0.0/8     and many more that we can use filters to narrow the results perncarian us, just like other search engines halanya, Shodan also have a dork, dork please to combine the boolean operators and filters to narrow your search results using the example,,   ountry:ID port:80 hostname:.id   So it is conceivable in the presence of Shodan would be a lot of servers that will be the compromise. how not, an attacker needs ga was looking for one target-one can even attack aimed at random victims. Shodan is likely to be the primary choice of pentester at any stage of information gathering or the script kiddies anymore prankster.,,,,