Should you enable Lockdown Mode on macOS?

Why this matters

Lockdown Mode is Apple’s response to mercenary spyware like Pegasus — commercial surveillance tools sold to states and used against journalists, dissidents, activists, and executives. It disables features attackers commonly exploit: link previews in Messages, most attachment types, FaceTime calls from unknown contacts, configuration profiles, certain web technologies, and shared albums.

The tradeoff is real: some websites break, some attachments don’t load, some shared photo albums stop working. For a typical user the friction outweighs the benefit, because typical users aren’t targeted by mercenary spyware. For a high-risk user — public-facing journalist, activist, executive, abuse survivor with a wealthy or state-connected adversary — that friction is a small price for cutting your attack surface by an order of magnitude.

How to do it

1. Open System Settings → Privacy & Security.
2. Scroll to the bottom and click Lockdown Mode → Turn On.
3. Restart when prompted.
4. After reboot, expect some sites to render oddly and some attachments to fail to preview. You can selectively allow specific apps and websites from the same Lockdown Mode settings panel.

What you don’t need

If you’re not specifically a target of sophisticated attackers, Lockdown Mode adds friction without meaningful benefit — the everyday hardening from FileVault, real 2FA, a password manager, and OS updates already covers your realistic threat model. Lockdown Mode is a precision tool for a narrow audience; using it as a generic “extra security” toggle is a mismatch.