Prevent anti-theft users from reading data

[i3130002 0]

I am using Eset for almost 2 years. I was thinking that by going into anti-theft account on my system people can access my data ! why not to prevent it ? 

By adding some group policy settings you can prevent anti-theft user to access hidden files or some drives or etc .

Please provide me some information about my idea, I'll be glad to help improving overall world security.