Overview
WhatsApp has introduced a new privacy tier called Strict Account Settings, positioned as a counterpart to Apple’s Lockdown Mode. The feature is aimed at high‑risk users—journalists, activists, and public‑facing personalities—by tightening default privacy controls.
How to Enable
Strict Account Settings can be turned on from the primary device only (not via WhatsApp Web):
- Open Settings → Privacy → Advanced.
- Look for the “Strict account settings” toggle. Availability may vary by region as the rollout is gradual.
Key Restrictions
When enabled, the following defaults are applied automatically:
- Attachments and media from senders not in your contacts are blocked.
- Location sharing, profile photo visibility, and status updates are limited to contacts only.
- Read receipts and “last seen” timestamps are hidden from non‑contacts.
Benefits of the Rust Migration
WhatsApp announced that parts of its codebase have been rewritten in Rust, a language praised for memory‑safety. This change helps:
- Prevent buffer‑overflow and use‑after‑free bugs that spyware often exploits.
- Secure the handling of photos, videos, and messages at the system level.
Availability and Limitations
The feature is currently rolling out worldwide over several weeks. Users should note:
- Strict settings cannot be managed from WhatsApp Web; they must be configured on the phone.
- If the option does not appear, it may not yet be released in your region.
Comparison with Apple’s Lockdown Mode
Both solutions share the same philosophy—default‑deny security for high‑risk individuals—but differ in scope:
- Apple’s Lockdown Mode protects the entire device ecosystem (calls, messages, apps, hardware).
- WhatsApp’s Strict Settings focus solely on the messaging app’s privacy surface.
Conclusion
WhatsApp’s Strict Account Settings give vulnerable users a powerful, out‑of‑the‑box privacy shield, while the move to Rust adds a deeper layer of technical resilience. Activating the feature is straightforward, but users should stay aware of regional rollout timelines and the limitation of managing settings only on the primary device.