I tried to post this question yesterday but can't find it. If this is a
duplicate question I apologize.

I need to save a .csv file so that it can be opened and read by another
user, but not changed without a password. When I try to protect the sheet
all the right popups and options appear, but the file isn't protected.

Is it possible to protect a .csv file? If so, how?

Thank you.

Jennifer