This guide serves to configure the essential security settings on macOS.

Digital security does not depend on a single program or a hidden setting. It mainly relies on simple, repeatable, and understandable choices: knowing what to check, when to intervene, and which behaviors to avoid.

Before starting

Check that the Apple ID is yours and protected by 2FA.

Update macOS and the main apps.

Prepare a disk or a destination for Time Machine.

Recommended procedure

  1. Enable FileVault to encrypt the disk.
  2. Use a strong user password and automatic screen lock.
  3. Enable the firewall if the Mac often connects to different networks.
  4. Check privacy and app permissions for camera, microphone, files, and location.
  5. Install apps from reliable sources and remove unnecessary ones.
  6. Configure Time Machine or an alternative backup.

Mistakes to avoid

  • Thinking that Macs do not need updates.
  • Leaving the session open without locking.
  • Granting full permissions to unknown apps.
  • Not making backups before important updates.

Quick checklist

  • macOS updated
  • FileVault active
  • Screen lock active
  • App permissions checked
  • Backup configured

Conclusion

A good IT guide should help you make fewer mistakes, not complicate your life. Start with essential checks, apply them calmly, and repeat them over time. Habits make the difference: update, verify, protect access, and do not trust messages that urge you to act hastily.