Is Block Site Safe?
Block Site — Nerq Trust Score 55.0/100 (C grade). Score based on 2 independent trust signals. Last analyzed: 2026-04-12
Block Site is a Firefox extension with a Nerq Trust Score of 55.0/100 (C), based on 3 independent data dimensions. Last analyzed: 2026-04-12 Security: 90/100. Popularity: 45/100. Data sourced from addons.mozilla.org metadata, permissions analysis, and source code availability. Last updated: 2026-04-12. Machine-readable data (JSON).
Is Block Site safe?
Trust Score Breakdown — Block Site has a Nerq Trust Score of 55.0/100 (C). Measured across 2 independent trust signals (as of 2026-04-12).
What is Block Site's trust score?
Block Site has a Nerq Trust Score of 55.0/100, 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 Block Site?
Block Site's strongest signal is security at 90/100. No known vulnerabilities have been detected.
What is Block Site and who maintains it?
| Author | Ray |
| Category | Firefox Add-ons |
| Source | N/A |
Block Site Across Platforms
Same developer/company in other registries:
Similar Firefox by Trust Score
Compare
Safety Guide: Block Site
What is Block Site?
Block Site is a Firefox add-on — A customizable, password-protected website blocker and redirector..
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=Block Site
Key Safety Concerns for Firefox add-on
When evaluating any Firefox add-on, watch for: excessive permissions, data harvesting.
Measured Signals
Block Site has a Nerq Trust Score of 55/100 (C). This score is a composite of automated measurements of security, maintenance, community, and quality signals.
Key Takeaways
- Block Site has a Trust Score of 55/100 (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 | 45/100 |
| 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 Block Site collect?
Block Site has a privacy score of 90/100. Review the documentation and privacy policy for data handling details.
Full analysis: Block Site Privacy Report · Privacy review
Is Block Site 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: Block Site Security Report
Block Site Across Platforms
Same developer/company in other registries:
How we calculated this score
Block Site's trust score of 55.0/100 (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 (45/100), 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 Block Site Safe?
What is Block Site's trust score?
What are safer alternatives to Block Site?
What permissions does Block Site need?
Is Block Site open source?
Popular in Firefox Add-ons
Browse Categories
See Also
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.