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SECURITY REPORT · EXTENSHI SCAN

Filter Lists Blocker

Firefox extension·by TinyTanuke
51
/ 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 6 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

Filter Lists Blocker's safety score vs every other extension we've scanned
Globally
40%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 402,581 extensions
In Privacy & Security
33%of privacy & security extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 12,497 privacy & security extensions
Findings
6
median 5Lower 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 · 6 distinct issues across 6 severities
6
distinct issues
detected

Permissions requested

2 risky permissions of 3 total
1 critical permission require attention
This extension requests 3 permissions in total. 2 of them grant broad capabilities that are worth a careful look.
Critical
Access to all websites

Can read and modify content on every website you visit

High
Control proxy settings

Can route your browser traffic through a proxy server

Medium
Store local data

Can save data locally in the browser for persistence

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Scan performed by extenshi.io · Aug 7, 2026
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