SECURITY REPORT · EXTENSHI SCAN
Search Companies House
Firefox extension·by JP
81
/ 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
Search Companies House's safety score vs every other extension we've scanned
Globally
43%of extensions carry more risk
Riskier ←→ Safer
Ranked against 397,225 extensions
In Search Tools
20%of search tools extensions carry more risk
Riskier ←→ Safer
Ranked against 16,543 search tools extensions
Findings
7
median 4Lower is safer
Critical findings
2
median 0Severity = Critical
Permissions
3
median 3Declared in manifest
Active users
2
median 2vs category median
Findings breakdown
Automated security signal · 7 distinct issues across 6 severities
7
distinct issues
detected
detected
Critical229%
High229%
Needs Review00%
Medium229%
Low114%
Info00%
Permissions requested
2 risky permissions of 3 total
2 high-risk permissions require attention
This extension requests 3 permissions in total. 2 of them grant broad capabilities that are worth a careful look.
High
Access all HTTP sites
Can read and modify content on all non-encrypted websites
High
Access all HTTPS sites
Can read and modify content on all encrypted websites
Medium
Add context menu items
Can add custom items to the right-click context menu
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Scan performed by extenshi.io · Aug 24, 2026
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