I too am a Federal Employee. Army actually, and I teach AIT for Satellite Communications. In the class rooms one floor up, they teach cyber security. The main thing knowing these guys (the other instructors) has taught me is that once something is online, it never goes away. You can delete it all you want, it is still online somewhere. Facebook actually records as you type, so every corrected word, every cancelled post, is still saved even though you didn't press "post". The tools available are quite amazing actually, and surprisingly simple to use. Just remember, nothing is free. If it is offered at "no cost to you", then you, and your data, are the product.
I am not saying this to discourage you in anyway. It is the reality of the world we live in. Unless you go full Ted Kazinski and live completely off the grid, you are tracked, analyzed, and monetized. Welcome to the future.
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