SECURITY REPORT · EXTENSHI SCAN
Umbrella by CloudDay.io
Firefox extension·by clouddayio
0
/ 100 SAFETY SCORE
CRITICAL
Severe indicators. Treat as unsafe until the developer addresses these findings.
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
Umbrella by CloudDay.io's safety score vs every other extension we've scanned
Globally
0%of extensions carry more risk
Riskier ←→ Safer
Ranked against 369,936 extensions
In Privacy & Security
0%of privacy & security extensions carry more risk
Riskier ←→ Safer
Ranked against 11,537 privacy & security extensions
Findings
24
median 5Lower is safer
Critical findings
3
median 0Severity = Critical
Permissions
10
median 4Declared in manifest
Active users
1
median 3vs category median
Findings breakdown
Automated security signal · 24 distinct issues across 6 severities
24
distinct issues
detected
detected
Critical313%
High625%
Needs Review00%
Medium1458%
Low14%
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
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
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
High
Control privacy settings
Can modify browser privacy settings like Do Not Track and safe browsing
High
Access local files
Can read files on your local filesystem opened in the browser
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
Medium
Show notifications
Can display desktop notifications outside the browser
Low
Block network requests (declarative)
Can block or redirect network requests using predefined rules without seeing content
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Scan performed by extenshi.io · Aug 24, 2026
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