* SLOW DOWN. * Stop and Think. * Don't click. Copy and paste a link into web browser. * Research first. * Lock your computer, cellphone when you're away. * Backup before make any change, on daily, and weekly. * Using KeePass or KeePassXC on Mac for password manager. * 7-Zip or Keka for macOS file archiver * Write it down. Pen and paper are good. * Email with plain text mode. * Airplane mode if not in use. * Power off if not in use. * Install only necessary app. * Uninstall if no longer need. * Use CerUtil or gpg to verify the integrity of downloaded file. Before installing, you should always verify that your download matches the signature that is published alongside the release package! * Use Two-Factor Authentication (2FA) if provide. * Keep it simple.