Using Shodan for fun and profit

Shodan is the world's first search engine that was used to search for devices that are connected on the internet. It was launched in 2009 by John Matherly. Shodan can be used to look up webcams, databases, industrial systems, video games, and so on. Shodan mostly collects data on the most popular web services that are running, such as HTTP, HTTPS, MongoDB, FTP, and many more.