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SECURITY REPORT · EXTENSHI SCAN

CthulhuJs (Anti-Fingerprint)

Chrome extension·by shawnli
15
/ 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

CthulhuJs (Anti-Fingerprint)'s safety score vs every other extension we've scanned
Globally
0%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 415,874 extensions
In Productivity
0%of productivity extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 202,458 productivity extensions
Findings
31
median 17Lower is safer
Critical findings
3
median 0Severity = Critical
Permissions
10
median 3Declared in manifest
Active users
10000
median 14vs category median

Findings breakdown

Automated security signal · 31 distinct issues across 6 severities
31
distinct issues
detected

Permissions requested

4 risky permissions of 10 total
4 high-risk permissions require attention
This extension requests 10 permissions in total. 4 of them grant broad capabilities that are worth a careful look.
High
View open tabs

Can see URLs and titles of all open tabs

High
Delete browsing data

Can remove browsing history, cookies, cache, and other browsing data

High
Execute scripts in pages

Can inject and execute JavaScript code in web pages

High
User scripts

Can register and execute user scripts in web pages

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

Low
Run in background

Can run scripts in the background when not actively in use

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 23, 2026
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