SECURITY REPORT · EXTENSHI SCAN
MirrorFusion
Firefox extension·by MirrorFusion
0
/ 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
MirrorFusion's safety score vs every other extension we've scanned
Globally
16%of extensions carry more risk
Riskier ←→ Safer
Ranked against 369,936 extensions
In Download Management
9%of download management extensions carry more risk
Riskier ←→ Safer
Ranked against 4,307 download management extensions
Findings
32
median 4Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
10
median 4Declared in manifest
Active users
0
median 9vs category median
Findings breakdown
Automated security signal · 32 distinct issues across 6 severities
32
distinct issues
detected
detected
Critical13%
High516%
Needs Review00%
Medium1650%
Low1031%
Info00%
Permissions requested
6 risky permissions of 10 total
1 critical permission require attention
This extension requests 10 permissions in total. 6 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
Access browser cookies
Can read and modify cookies, potentially accessing login sessions
High
Manage downloads
Can initiate downloads and access your download history
High
Execute scripts in pages
Can inject and execute JavaScript code in web pages
High
Observe web requests
Can monitor all network requests made by the browser
High
Block and modify web requests
Can intercept, block, or modify any network request before it completes
Medium
Access current tab
Can temporarily access the content of the active tab when you click the extension
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
Monitor navigation
Can observe and track tab navigation events and URL changes
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Scan performed by extenshi.io · Aug 18, 2026
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