Is U2F Safe?
U2F — Nerq Trust Score 57.5/100 (C grade). Based on analysis of 2 trust dimensions, it is has notable safety concerns. Last updated: 2026-03-31.
Use U2F with some caution. U2F is a Ruby gem with a Nerq Trust Score of 57.5/100 (C), based on 3 independent data dimensions. It is below the recommended threshold of 70. Security: 80/100. Popularity: 95/100. Data sourced from rubygems.org, GitHub, and NVD. Last updated: 2026-03-31. Machine-readable data (JSON).
Is U2F safe?
CAUTION — U2F has a Nerq Trust Score of 57.5/100 (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 U2F's trust score?
U2F has a Nerq Trust Score of 57.5/100, 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 U2F?
U2F's strongest signal is popularity at 95/100. No known vulnerabilities have been detected. It has not yet reached the Nerq Verified threshold of 70+.
What is U2F and who maintains it?
| Author | Johan Brissmyr, Sebastian Wallin |
| Category | gems |
| Source | N/A |
U2F Across Platforms
Same developer/company in other registries:
Similar Gems by Trust Score
Safety Guide: U2F
What is U2F?
U2F is a Ruby gem — Library for handling registration and authentication of U2F devices.
How to Verify Safety
Run bundle audit. Review on rubygems.org.
You can also check the trust score via API: GET /v1/preflight?target=u2f
Key Safety Concerns for Ruby gems
When evaluating any Ruby gem, watch for: dependency vulnerabilities, maintenance status.
Trust Assessment
U2F has a Nerq Trust Score of 58/100 (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
- U2F has a Trust Score of 58/100 (C).
- Review carefully before use — below trust threshold.
- Always verify independently using the Nerq API.
Frequently Asked Questions
Is U2F safe to use?
What is U2F's trust score?
What are safer alternatives to U2F?
Does U2F have known vulnerabilities?
How actively maintained is U2F?
Popular in gems
Disclaimer: Nerq trust scores are automated assessments based on publicly available signals. They are not endorsements or guarantees. Always conduct your own due diligence.