What are these icons?

A couple of years ago i had the fake windows anti virus malware and another one which deleted my desktop icons and windows start shortcuts. I had the virus and malware removed by malwarebyes ad norton 360.

 

Recently i had installed the new updates from windows, (i havent done for a while)  and these new icons are appearing next to the shortcut icons.

One is a shield - which ask me the program needs permission to continue

the other

is two user icons which i dont know what it means.

What are they and is it something i should be worried about?

 

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