SECURITY REPORT · EXTENSHI SCAN
Full Screen Multiple Monitor
Firefox extension·by Yohanes AI
63
/ 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 2 years
- The developer's website is no longer reachable
- Bundles libraries with known vulnerabilities and no fix in sight
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
Full Screen Multiple Monitor's safety score vs every other extension we've scanned
Globally
69%of extensions carry more risk
Riskier ←→ Safer
Ranked against 415,874 extensions
In Appearance
42%of appearance extensions carry more risk
Riskier ←→ Safer
Ranked against 19,041 appearance extensions
Findings
20
median 5Lower is safer
Critical findings
0
median 0Severity = Critical
Permissions
1
median 2Declared in manifest
Active users
284
median 3vs category median
Findings breakdown
Automated security signal · 20 distinct issues across 6 severities
20
distinct issues
detected
detected
Critical00%
High00%
Needs Review00%
Medium1785%
Low315%
Info00%
Permissions requested
1 permission declared
No risky permissions
1 permission requested — none are flagged as risky.
Medium
Store local data
Can save data locally in the browser for persistence
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Scan performed by extenshi.io · Oct 22, 2026
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