I am going to show you a method on obtaining Usernames and Passwords using Wireshark, this is for educational purposes only I do not condone such misuse and or acts for persons intentions on this application and or program.
open up Wireshark WiFi interface and or ether net pending on what type of connection you want to use. You can use all interfaces as well if you wish.
in the search filter bar type http.request.method =="POST"
press enter to start capturing. open up a new tab in your search engine be it Hotmail or other. type in your username and password or an example one click the login button. after which go back to Wireshark and open the sub key where it displays hypertext transfer protocol. you will notice the past function where it shows your info on what you typed in on the login form.