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SECURITY REPORT · EXTENSHI SCAN

Prevent New Tabs — Per-Site Popup Blocker

Firefox extension·by Prevent New Page
75
/ 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

Prevent New Tabs — Per-Site Popup Blocker's safety score vs every other extension we've scanned
Globally
25%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 409,596 extensions
In Tabs
9%of tabs extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 12,600 tabs extensions
Findings
16
median 4Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
6
median 3Declared in manifest
Active users
26
median 3vs category median

Findings breakdown

Automated security signal · 16 distinct issues across 6 severities
16
distinct issues
detected

Permissions requested

2 risky permissions of 6 total
1 critical permission require attention
This extension requests 6 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
View open tabs

Can see URLs and titles of all open tabs

Medium
Monitor navigation

Can observe and track tab navigation events and URL changes

Medium
Store local data

Can save data locally in the browser for persistence

Low
Schedule tasks

Can schedule periodic background tasks

Info
https://api.keygen.sh/*

No additional information available.

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Scan performed by extenshi.io · Aug 24, 2026
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