SECURITY REPORT · EXTENSHI SCAN
Anti-USOnly
Firefox extension·by GiantPreston
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
Anti-USOnly's safety score vs every other extension we've scanned
Globally
22%of extensions carry more risk
Riskier ←→ Safer
Ranked against 120,718 extensions
In Social & Communication
13%of social & communication extensions carry more risk
Riskier ←→ Safer
Ranked against 18,528 social & communication extensions
Findings
11
median 4Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
7
median 3Declared in manifest
Active users
1
median 4vs category median
Findings breakdown
Automated security signal · 11 findings across 5 severities
11
findings
detected
detected
Critical19%
High19%
Medium873%
Low19%
Info00%
Permissions requested
2 risky permissions of 7 total
1 critical permission require attention
This extension requests 7 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
Store local data
Can save data locally in the browser for persistence
Medium
Show notifications
Can display desktop notifications outside the browser
Medium
Access current tab
Can temporarily access the content of the active tab when you click the extension
Medium
Monitor navigation
Can observe and track tab navigation events and URL changes
Low
Schedule tasks
Can schedule periodic background tasks
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Scan performed by extenshi.io · Jun 25, 2026
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