Is Privacy Badger Safe?
Privacy Badger — Nerq Trust Score 57.2/100 (C grade). Based on analysis of 2 trust dimensions, it is has notable safety concerns. Last updated: 2026-08-01.
Use Privacy Badger with some caution. Privacy Badger is a Firefox extension with a Nerq Trust Score of 57.2/100 (C), based on 3 independent data dimensions. Below the recommended threshold of 70. Security: 90/100. Popularity: 60/100. Data sourced from addons.mozilla.org metadata, permissions analysis, and source code availability. Last updated: 2026-04-12. Machine-readable data (JSON).
Is Privacy Badger safe?
CAUTION — Privacy Badger has a Nerq Trust Score of 57.2/100 (C). It has moderate trust signals but shows some areas of concern that warrant attention. Suitable for development use — review security and maintenance signals before production deployment.
What is Privacy Badger's trust score?
Privacy Badger has a Nerq Trust Score of 57.2/100, earning a C grade. This score is based on 2 independently measured dimensions including security, maintenance, and community adoption.
What are the key security findings for Privacy Badger?
Privacy Badger's strongest signal is security at 90/100. No known vulnerabilities have been detected. It has not yet reached the Nerq Verified threshold of 70+.
What is Privacy Badger and who maintains it?
| Author | EFF Technologists |
| Category | Firefox Add-ons |
| Source | N/A |
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Safety Guide: Privacy Badger
What is Privacy Badger?
Privacy Badger is a Firefox add-on — Automatically learns to block hidden trackers. Made by the leading digital rights nonprofit EFF to stop companies from spying on you..
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=Privacy Badger
Key Safety Concerns for Firefox add-on
When evaluating any Firefox add-on, watch for: excessive permissions, data harvesting.
Trust Assessment
Privacy Badger has a Nerq Trust Score of 57/100 (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
- Privacy Badger has a Trust Score of 57/100 (C).
- Review carefully before use — below trust threshold.
- Always verify independently using the Nerq API.
Detailed Score Analysis
| Dimension | Score |
|---|---|
| Security | 90/100 |
| Maintenance | 50/100 |
| Popularity | 60/100 |
| Quality | 40/100 |
| Community | 35/100 |
Based on 5 dimensions. Data from addons.mozilla.org metadata, permissions analysis, and source code availability.
What data does Privacy Badger collect?
Privacy Badger has a privacy score of 90/100. Review the documentation and privacy policy for data handling details.
Full analysis: Privacy Badger Privacy Report · Privacy review
Is Privacy Badger secure?
Security score: 90/100. This meets the recommended security threshold for production use.
Nerq monitors this entity against NVD, OSV.dev, and registry-specific vulnerability databases for ongoing security assessment.
Full analysis: Privacy Badger Security Report
How we calculated this score
Privacy Badger's trust score of 57.2/100 (C) is computed from addons.mozilla.org metadata, permissions analysis, and source code availability. The score reflects 5 independent dimensions: security (90/100), maintenance (50/100), popularity (60/100), quality (40/100), community (35/100). Each dimension is weighted equally to produce the composite trust score.
Nerq analyzes over 7.5 million entities across 26 registries using the same methodology, enabling direct cross-entity comparison. Scores are updated continuously as new data becomes available.
This page was last reviewed on August 01, 2026. Data version: 1.0.
Full methodology documentation · Machine-readable data (JSON API)
Frequently Asked Questions
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Disclaimer: Nerq trust scores are automated assessments based on publicly available signals. They are not endorsements or guarantees. Always conduct your own due diligence.