SECURITY REPORT · EXTENSHI SCAN
Default Search with Anthropic
Firefox extension·by Claude Search
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
Default Search with Anthropic's safety score vs every other extension we've scanned
Globally
45%of extensions carry more risk
Riskier ←→ Safer
Ranked against 369,936 extensions
In Other
18%of other extensions carry more risk
Riskier ←→ Safer
Ranked against 26,888 other extensions
Findings
8
median 3Lower is safer
Critical findings
2
median 0Severity = Critical
Permissions
6
median 3Declared in manifest
Active users
7324
median 2vs category median
Findings breakdown
Automated security signal · 8 distinct issues across 6 severities
8
distinct issues
detected
detected
Critical225%
High113%
Needs Review00%
Medium338%
Low225%
Info00%
Permissions requested
1 risky permission of 6 total
1 high-risk permission require attention
This extension requests 6 permissions in total. 1 of them grant broad capabilities that are worth a careful look.
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
Add context menu items
Can add custom items to the right-click context menu
Medium
Write to clipboard
Can place content onto your clipboard
Low
Block network requests (declarative)
Can block or redirect network requests using predefined rules without seeing content
Info
https://claude.ai/*
No additional information available.
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Scan performed by extenshi.io · Aug 3, 2026
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