Shodan is the “google” for hackers. It allows an individual to find, track, and hack all different IoT Devices from around the world. Shodan is a 24/7 web crawler that can be used in two different ways. One being through the site, and two being through the command line. They both have their own pros and cons, but overall when using command line, Shodan searches for results through meta data and headers. Where as, the website just searches through the header.