extenshi.io
SECURITY REPORT · EXTENSHI SCAN

Client Challenge

Firefox extension·by チェキッ娘
40
/ 100 SAFETY SCORE
RISKY
Several elevated signals. Read the findings before sharing this with your team.

Likely abandonedsafety score reduced by 30 points

  • No update in over 6 years
  • Bundles libraries with known vulnerabilities and no fix in sight
Why this matters

An unmaintained extension keeps whatever flaws it shipped with, and a listing with users but no owner is an attractive target to buy and repurpose.

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

Client Challenge's safety score vs every other extension we've scanned
Globally
14%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 402,581 extensions
In Appearance
3%of appearance extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 18,896 appearance extensions
Findings
27
median 3Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
5
median 2Declared in manifest
Active users
0
median 3vs category median

Findings breakdown

Automated security signal · 27 distinct issues across 6 severities
27
distinct issues
detected

Permissions requested

2 risky permissions of 5 total
2 high-risk permissions require attention
This extension requests 5 permissions in total. 2 of them grant broad capabilities that are worth a careful look.
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

Info
https://*.hatena.ne.jp/*

No additional information available.

Info
http://*.hatenablog.com/*

No additional information available.

Info
https://*.hatenablog.com/*

No additional information available.

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Scan performed by extenshi.io · Aug 25, 2026
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