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SECURITY REPORT · EXTENSHI SCAN

Tree Style Tab in Separate Window

Firefox extension·by Lej77
57
/ 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 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

Tree Style Tab in Separate Window's safety score vs every other extension we've scanned
Globally
58%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 409,539 extensions
In Appearance
24%of appearance extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 18,944 appearance extensions
Findings
9
median 3Lower is safer
Critical findings
0
median 0Severity = Critical
Permissions
5
median 2Declared in manifest
Active users
140
median 3vs category median

Findings breakdown

Automated security signal · 9 distinct issues across 6 severities
9
distinct issues
detected

Permissions requested

1 risky permission of 5 total
1 high-risk permission require attention
This extension requests 5 permissions in total. 1 of them grant broad capabilities that are worth a careful look.
High
View open tabs(optional)

Can see URLs and titles of all open tabs

Medium
Store local data

Can save data locally in the browser for persistence

Medium
Custom menus

Can add custom items to the browser context menu

Medium
Show notifications

Can display desktop notifications outside the browser

Medium
Access session data

Can query and restore recently closed tabs and windows

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Scan performed by extenshi.io · Aug 24, 2026
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