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SECURITY REPORT · EXTENSHI SCAN

LeechBlock NG

Firefox extension·by James Anderson
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

LeechBlock NG's safety score vs every other extension we've scanned
Globally
33%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 421,529 extensions
In Other
18%of other extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 28,848 other extensions
Findings
25
median 6Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
9
median 3Declared in manifest
Active users
112840
median 2vs category median

Findings breakdown

Automated security signal · 25 distinct issues across 6 severities
25
distinct issues
detected

Permissions requested

3 risky permissions of 9 total
1 critical permission require attention
This extension requests 9 permissions in total. 3 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
View open tabs

Can see URLs and titles of all open tabs

High
Access browsing history(optional)

Can read and modify your complete browsing history

Medium
Custom menus

Can add custom items to the browser context menu

Medium
Store local data

Can save data locally in the browser for persistence

Medium
Unlimited local storage

Can store large amounts of data locally without size limits

Medium
Monitor navigation

Can observe and track tab navigation events and URL changes

Low
Schedule tasks

Can schedule periodic background tasks

Info
*://*/*lb-custom*

No additional information available.

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Scan performed by extenshi.io · Oct 22, 2026
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