SECURITY REPORT · EXTENSHI SCAN
App for Messenger™
Firefox extension·by Fernika
79
/ 100 SAFETY SCORE
CAUTION
Mostly fine, but a few things worth reviewing before you install.
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
App for Messenger™'s safety score vs every other extension we've scanned
Globally
35%of extensions carry more risk
Riskier ←→ Safer
Ranked against 402,632 extensions
In Social & Communication
18%of social & communication extensions carry more risk
Riskier ←→ Safer
Ranked against 13,646 social & communication extensions
Findings
8
median 5Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
2
median 3Declared in manifest
Active users
787
median 3vs category median
Findings breakdown
Automated security signal · 8 distinct issues across 6 severities
8
distinct issues
detected
detected
Critical113%
High113%
Needs Review00%
Medium338%
Low338%
Info00%
Permissions requested
2 permissions declared
No risky permissions
2 permissions requested — none are flagged as risky.
Medium
Store local data
Can save data locally in the browser for persistence
Info
*://*.messenger.com/*
No additional information available.
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Scan performed by extenshi.io · Jul 25, 2026
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