SECURITY REPORT · EXTENSHI SCAN
Surfchck
Firefox extension·by surfchck
0
/ 100 SAFETY SCORE
DANGEROUS
Meaningful risk surface. Avoid on managed devices without review.
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
Surfchck's safety score vs every other extension we've scanned
Globally
37.84%of extensions carry more risk
Riskier ←→ Safer
Ranked across every extension we scan
In its category
27.840000000000003%of its category extensions carry more risk
Riskier ←→ Safer
Ranked within its category
Findings
411
median 38Lower is safer
Risky permissions
9
median 1Critical + high perms
Total permissions
17
median 4All declared perms
Critical findings
8
median 2Severity = Critical
Findings breakdown
Automated security signal · 411 findings across 5 severities
411
findings
detected
detected
Critical82%
High10927%
Medium27667%
Low184%
Info00%
Permissions requested
9 risky permissions of 17 total
2 critical permissions require attention
This extension requests 17 permissions in total. 9 of them grant broad capabilities that are worth a careful look.
Critical
Manage other extensions
Can enable, disable, or uninstall other browser extensions
Critical
Communicate with desktop apps
Can exchange messages with applications installed on your computer
High
Execute scripts in pages
Can inject and execute JavaScript code in web pages
High
View open tabs
Can see URLs and titles of all open tabs
High
Manage downloads
Can initiate downloads and access your download history
High
Access browser cookies
Can read and modify cookies, potentially accessing login sessions
Medium
Store local data
Can save data locally in the browser for persistence
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
Medium
Show notifications
Can display desktop notifications outside the browser
Medium
Access user identity
Can get OAuth2 tokens and access your Google account identity
Low
Schedule tasks
Can schedule periodic background tasks
Low
Detect idle state
Can detect when your machine is idle, active, or locked
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 · Jun 25, 2026· partial run (some scanners failed)
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