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Go to Settings then Safari then
The Amnesic Incognito Live SystemThe Amnesic Incognito Live System or Tails is a security-focused Debian-based Linux distribution aimed at preserving privacy and anonymity. It is the next iteration of development on the previous Gentoo-based Incognito Linux distribution. All its outgoing connections are forced to go through Tor, and direct connections are blocked. The system is designed to be booted as a live DVD or live USB, and will leave no trace on the machine unless explicitly told to do so. The Tor Project has provided most of the financial support for development.
I find this works excellent on most Mac computers and I like using it best from a DVD
This is the system Edward Snowden used or still uses.
I rate it five stars.
Never bend your head. Always hold it high. Look the world straight in the eye.Helen Keller
Putting tape over your webcam is a great idea and EVERYONE should do it. Even the FBI director does it. If a hacker manages to get into your computer, it will be hell for you, but this is a super simple way to keep them from taking photos of you, especially naked ones that could later be used to embarrass, harass or blackmail you. (It won’t prevent them from stealing existing photos from your computer, however, so make sure you’re encrypting your naked selfies.)