SECURITY REPORT · EXTENSHI SCAN
Quo
Firefox extension·by Sergio Romero
50
/ 100 SAFETY SCORE
RISKY
Several elevated signals. Read the findings before sharing this with your team.
Likely abandonedsafety score reduced by 30 points
- No update in over 7 years
Why this matters
An unmaintained extension keeps whatever flaws it shipped with, and a listing with users but no owner is an attractive target to buy and repurpose.
Automated analysis of publicly available code — not a professional security audit. It may produce false positives and does not prove an extension is unsafe or safe. Treat it as one signal among many. Disclaimer · Report an issue
How it ranks
Quo's safety score vs every other extension we've scanned
Globally
37%of extensions carry more risk
Riskier ←→ Safer
Ranked against 402,581 extensions
In Appearance
12%of appearance extensions carry more risk
Riskier ←→ Safer
Ranked against 18,896 appearance extensions
Findings
4
median 3Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
1
median 2Declared in manifest
Active users
0
median 3vs category median
Findings breakdown
Automated security signal · 4 distinct issues across 6 severities
4
distinct issues
detected
detected
Critical125%
High250%
Needs Review00%
Medium125%
Low00%
Info00%
Permissions requested
1 risky permission of 1 total
1 high-risk permission require attention
This extension requests 1 permission in total. 1 of them grant broad capabilities that are worth a careful look.
High
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Scan performed by extenshi.io · Aug 24, 2026
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