extenshi.io
SECURITY REPORT · EXTENSHI SCAN

skull

Firefox extension·by 412
82
/ 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

skull's safety score vs every other extension we've scanned
Globally
43%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 402,581 extensions
In Privacy & Security
36%of privacy & security extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 12,497 privacy & security extensions
Findings
10
median 5Lower is safer
Critical findings
2
median 0Severity = Critical
Permissions
8
median 4Declared in manifest
Active users
0
median 3vs category median

Findings breakdown

Automated security signal · 10 distinct issues across 6 severities
10
distinct issues
detected

Permissions requested

3 risky permissions of 8 total
3 high-risk permissions require attention
This extension requests 8 permissions in total. 3 of them grant broad capabilities that are worth a careful look.
High
View open tabs

Can see URLs and titles of all open tabs

High
Access all HTTP sites

Can read and modify content on all non-encrypted websites

High
Access all HTTPS sites

Can read and modify content on all encrypted websites

Medium
Store local data

Can save data locally in the browser for persistence

Medium
Show notifications

Can display desktop notifications outside the browser

Medium
Monitor navigation

Can observe and track tab navigation events and URL changes

Low
Schedule tasks

Can schedule periodic background tasks

Low
Customize theme

Can change the browser theme appearance

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Scan performed by extenshi.io · Aug 24, 2026
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