Is Messenger For Facebook™ Safe?

Messenger For Facebook™ — Nerq Trust Score 50.5/100 (C- grade). Based on analysis of 2 trust dimensions, it is has notable safety concerns. Last updated: 2026-08-02.

Use Messenger For Facebook™ with some caution. Messenger For Facebook™ is a Firefox extension with a Nerq Trust Score of 50.5/100 (C-), based on 3 independent data dimensions. Below the recommended threshold of 70. Security: 90/100. Popularity: 15/100. Data sourced from addons.mozilla.org metadata, permissions analysis, and source code availability. Last updated: 2026-03-22. Machine-readable data (JSON).

Messenger For Facebook™ Across Platforms

Same developer/company in other registries:

Safety Guide: Messenger For Facebook™

What is Messenger For Facebook™?

Messenger For Facebook™ is a Firefox add-on — Messenger for Facebook™ lets you bring a Messenger right into your browser to chat with your friends..

How to Verify Safety

Review permissions on addons.mozilla.org. Check if source code is available.

You can also check the trust score via API: GET /v1/preflight?target=Messenger for Facebook™

Key Safety Concerns for Firefox add-on

When evaluating any Firefox add-on, watch for: excessive permissions, data harvesting.

Trust Assessment

Messenger For Facebook™ has a Nerq Trust Score of 50/100 (C-) and has not yet reached Nerq trust threshold (70+). This score is based on automated analysis of security, maintenance, community, and quality signals.

Key Takeaways

• Messenger For Facebook™ has a Trust Score of 50/100 (C-).
• Review carefully before use — below trust threshold.
• Always verify independently using the Nerq API.

Disclaimer: Nerq trust scores are automated assessments based on publicly available signals. They are not endorsements or guarantees. Always conduct your own due diligence.