If you’re ever curious what goes into computer security, take a glimpse at Facebook’s privacy messages in the off-chance that they happen to appear. Make sense? Kudos to you for at least making the attempt. If they don’t—which is usually the case for the small number of people who actually try—consider talking to your local trustworthy IT person. What’s that? You don’t have a local IT person whom you can trust? Okay… now you are starting to understand the current state things.