What is this notification? Can anyone help me to know this types of problematic solution! May this is the technical issue of Internet and really am not more amateur about the Internet! 

thank you Aashish , Yes I got the Knox security notification. But when I restart the device a warning notification like " Your bootloader is unlocked and the software integrity is not verified " I have no another smart phone so that I stop to use th...

Thanks, Yes it is . Can you plz give me the suggestions to secure my device!