Devastating Discovery!

I just clicked on "Permissions" in Chrome>Tools>Extensions>Norton Identity Protection. This is what came up:

 

          Norton Identity Protection
          It can:
          Access all data on your computer and the websites you visit.

 

What?????? ALL THE DATA ON MY COMPUTER??????   I don't recall giving this permission.

 

I am outraged!   Why is this necessary?   What happened to my privacy, not to mention security?