- Move all your login credentials to a password manager. Do a security audit. Update any weak passwords, change any duplicate passwords. If you've saved any passwords in the browser, delete them (and maybe even change your passwords for those accounts for good measure).
- If you're using biometric login (fingerprints, voice unlock) for any important accounts (such as online bank accounts), don't.
- Use keybase to authenticate yourself. They have really good setup instructions.
- You'll need to generate a public key. You can have Keybase do this for you, but it's better to generate one yourself on your machine and upload it to Keybase. The public key can now be used by anyone if they want to securely communicate with you!
- Set up 2-factor authentication for all your important accounts. I've done this for (so far) Google, Facebook, Twitter, Digital Ocean, and Github. It's best to use an authenticator app (like Authy or Google Authenticator) instead of SMS.
- Also download recovery