View Notes Here - http://www.evernote.com/l/AbEK0iHT13ND2JkQ9kEJoRr4Vl6-XN_tVTc/ In this video, I have explained and practically shown the purpose of Input Validation and Output Encoding in Applications as part of Security. Security Testing need to be performed to check whether the Applications have proper Input Validation and Output Encoding in place.