SECURITY REPORT · EXTENSHI SCAN
RuBlock
Firefox extension·by PETR
76
/ 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
RuBlock's safety score vs every other extension we've scanned
Globally
29%of extensions carry more risk
Riskier ←→ Safer
Ranked against 410,251 extensions
In Privacy & Security
22%of privacy & security extensions carry more risk
Riskier ←→ Safer
Ranked against 12,553 privacy & security extensions
Findings
11
median 6Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
3
median 4Declared in manifest
Active users
1
median 3vs category median
Findings breakdown
Automated security signal · 11 distinct issues across 6 severities
11
distinct issues
detected
detected
Critical19%
High19%
Needs Review00%
Medium873%
Low19%
Info00%
Permissions requested
3 permissions declared
No risky permissions
3 permissions requested — none are flagged as risky.
Medium
Store local data
Can save data locally in the browser for persistence
Medium
Monitor navigation
Can observe and track tab navigation events and URL changes
Low
Block network requests (declarative)
Can block or redirect network requests using predefined rules without seeing content
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Scan performed by extenshi.io · Aug 24, 2026
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