Infosec 101 for Activists (add this info to previous posts on activist safety)
https://infosecforactivists.org/
Drew Bjorn, Mark Sherman, Ph.D., and Blake Skinner
Website:
https://infosecforactivists.org/
The pdf download link is broken. I submitted a gripe about this.
I created a pdf from this page, but all the links in it point to the site above.
The document is CC licensed but too long and too many links to post in full.
Introduction
America has a strong tradition of activism, dating back to slave revolts and indigenous uprisings even before the founding of the United States. Today, activism in the US remains critical. Street protests are an essential tool that activists use to raise awareness and push for institutional change. That being said, challenging existing power structures carries an element of risk - exposure can lead to harassment, arrest, or doxxing.
Your personal information is more accessible than it has ever been in the past. In this document, well talk about how hostile groups can leverage information against activists, and what you can do to protect yourself and others. This document is focused on digital safety and information security for activists who have special requirements and risks. Others have written about protest safety in a general sense, as well as day-to-day digital safety. We would be remiss if we did not remind you, DONT TALK TO THE POLICE.
If you are in a hurry, please begin with the tools chart below. Youll find information you can use right away! We have also included tips and concepts to make your personal information safer at actions AND in your day-to-day life.
Why should you care? While challenging existing power structures has always carried an element of risk, the wireless digital landscape provided by todays technology makes it far riskier. Law enforcement commonly works with tech companies to access user data, which the user (you) believed was private. Data breaches expose names and other personal information, which can have ramifications in your everyday life. Our goal is to help you conduct activism safely without bringing unnecessary police surveillance, violence, or threats to your employment to your doorstep. This document is a guide to help you keep control over your own sensitive information.
Summary (snapshot)

PERSONAL NOTE.
People are cautious about Proton CEO Andy Yen's praise of a Trump appointee "who favors small tech over big tech"
WHICH IS OBVIOUS IN TRUMP'S LOVE FOR ELON MUSK (Ultra sarcasm here)
Quote from Elon:
The more I have gotten to know President Trump, the more I like him. Frankly, I love the guy, Mr. Musk said in a live audio conversation on X early Monday morning.
Anyway, I am open to suggestions for a Proton alternative.
It takes only one mistake to ruin your life. And Andy made a big mistake.

"Big Tech" Twitter/X will NOT be investigated or prosecuted for abuse by said appointee. 💩