SECURITY REPORT · EXTENSHI SCAN
Mateus
Firefox extension·by Mateus Melo
49
/ 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 5 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
Mateus's safety score vs every other extension we've scanned
Globally
36%of extensions carry more risk
Riskier ←→ Safer
Ranked against 409,612 extensions
In Language Support
25%of language support extensions carry more risk
Riskier ←→ Safer
Ranked against 4,533 language support extensions
Findings
9
median 5Lower is safer
Critical findings
5
median 0Severity = Critical
Permissions
1
median 3Declared in manifest
Active users
198
median 3vs category median
Findings breakdown
Automated security signal · 9 distinct issues across 6 severities
9
distinct issues
detected
detected
Critical556%
High111%
Needs Review00%
Medium222%
Low111%
Info00%
Permissions requested
1 permission declared
No risky permissions
1 permission requested — none are flagged as risky.
Info
*://*.cstimer.net/*
No additional information available.
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Scan performed by extenshi.io · Aug 3, 2026
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