But that's for "everyday internetting." If you're a whistleblower or someone else likely to be targeted, "use Tor." He also advises using Signal for encrypted chat, which is good advice for everyone, not just people in high-risk situations.
Another piece of advice offered in Part Two that everyone should follow is locking your credit report.
For people at risk of domestic violence and stalkerware (the two are highly correlated), he suggests Operation Safe Escape:
-"Cory Doctorow's linkblog (@firstname.lastname@example.org)"