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SECURITY REPORT · EXTENSHI SCAN

Onion Control (anonymous proxy)

Firefox extension·by Andy Portmen
39
/ 100 SAFETY SCORE
DANGEROUS
Meaningful risk surface. Avoid on managed devices without review.

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

Onion Control (anonymous proxy)'s safety score vs every other extension we've scanned
Globally
13%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 409,612 extensions
In Privacy & Security
9%of privacy & security extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 12,552 privacy & security extensions
Findings
14
median 5Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
5
median 4Declared in manifest
Active users
377
median 3vs category median

Findings breakdown

Automated security signal · 14 distinct issues across 6 severities
14
distinct issues
detected

Permissions requested

3 risky permissions of 5 total
1 critical permission require attention
This extension requests 5 permissions in total. 3 of them grant broad capabilities that are worth a careful look.
Critical
Communicate with desktop apps

Can exchange messages with applications installed on your computer

High
Control proxy settings

Can route your browser traffic through a proxy server

High
Control privacy settings

Can modify browser privacy settings like Do Not Track and safe browsing

Medium
Store local data

Can save data locally in the browser for persistence

Medium
Show notifications

Can display desktop notifications outside the browser

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Scan performed by extenshi.io · Aug 24, 2026
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