Thank you for reminding me there is a lock for an individual records. What concerns me is that no lock exists that I know of to keep my records private as a whole. I don't like anyone coming into my computers since I had two go to the trash heap after being fried by invaders. Since Social Security and medical records can be accessed and your relatives given as evidence of identity in many instances for us older folks who trustingly gave store clerks our social security numbers to be able to use checks for payments in past times, our lives are much more vulnerable to identity theft and abuse. So with Apple being the greatest protectors of my personal computer stored information, I am surprised they don't have a lock for the whole program. I do have the Preferences for Safari blocking as match intrusion as possible now. I caution anyone from putting their own name and information in any tree that goes online. If there is nothing sacred or off limits in society there isn no reason for any religions. It turns prayer into useless prattle. So that is my concern for the next generation since my personal information made it's way around the world without my permission. Being aware is being wise. Only put people before 1900 on your computer. Keep the rest in paper files which can always be read with our without electricity. It is our children's future that can be put on the line vulnerable to the world.