Shodan is basically a search engine to find routers switches SCADA etc mainly vulnerable system on the internet .Shodan also called google for hackers.It was launched by John Matherly in 2009.A search engine of service banner in which metadata sent from the server to client.Shodan probes 50+ port
Shodan is a search engine that lets the user find specific types of computers connected to the internet using a variety of filters.Shodan can show you what search engines like Google doesn’t want to show you. Shodan gets all the HTTP addresses of various devices linked over the Internet across the world and stacking them to their database. They do indexing based on various factors like brand, country, OS, etc.
It's stunning what can be found with a simple search on Shodan. Countless traffic lights, security camera, home automation devices and heating systems are connected to the Internet and easy to spot
If you have internet enabled security devices with you then this might be some mistakes as hackers could take control of it. It is, however, hard for them also to hack it.
A quick search for "default password" reveals countless printers, servers and system control devices that use "admin" as their user name and "1234" as their password. Many more connected systems require no credentials at all -- all you need is a Web browser to connect to them.
Servers, Routers, Switches , Printers on public ip, Webcams ,Gas station pumps ,Voip phones And all Scada devices are find by Shodan
How to get information and how sShodan search the items?
Users search the particular items on the Shodan after that Shodan probes for ports and captures the result.After that shodan indexes the capture banner after indexing it display the result.
What did you think about Google and Shodan for searching the items?
Shodan
a)User search the item
b)Probes port and capturing result
c)Indexes the capturing banners
d)And display the result
a)User search the items
b)Google crawler crawl for the data on the web pages
c)It indexes the web content
d)It display the result on the basis of page ranking
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