Is Privacy Badger Safe?
Privacy Badger — Nerq Trust Score 57.2/100 (C grade). Score based on 2 independent trust signals. Last analyzed: 2026-04-12
Privacy Badger is a Firefox extension with a Nerq Trust Score of 57.2/100 (C), based on 3 independent data dimensions. Last analyzed: 2026-04-12 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?
Trust Score Breakdown — Privacy Badger has a Nerq Trust Score of 57.2/100 (C). Measured across 2 independent trust signals (as of 2026-04-12).
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.
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.
Measured Signals
Privacy Badger has a Nerq Trust Score of 57/100 (C). This score is a composite of automated measurements of security, maintenance, community, and quality signals.
Key Takeaways
- Privacy Badger has a Trust Score of 57/100 (C).
- The score is a measured composite — it is not a suitability judgment. Evaluate the individual signals against your own requirements.
- Query the current measured values via 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 (0-100, higher = fewer measured security issues).
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.
Signals last measured on April 12, 2026. Data version: 1.0.
Full methodology documentation · Machine-readable data (JSON API)
Frequently Asked Questions
Is Privacy Badger Safe?
What is Privacy Badger's trust score?
What are safer alternatives to Privacy Badger?
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Disclaimer: Nerq trust scores are automated measurements based on publicly available signals. They are not endorsements, verdicts, or guarantees of suitability. Always evaluate the signals against your own requirements.