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SECURITY REPORT · EXTENSHI SCAN

Is Client Challenge safe?

Checked version: not provided · Assessment updated (UTC): 2026-08-19

Firefox extension·by 310kent0
57
/ 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 7 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
59%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 427,614 extensions
In Other
38%of other extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 28,874 other extensions
Findings
11
median 6Lower is safer
Critical findings
0
median 0Severity = Critical
Permissions
1
median 3Declared in manifest
Active users
0
median 2vs category median

Findings breakdown

Automated security signal · 11 distinct issues across 6 severities
11
distinct issues
detected
Scanners reported 18 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.

Permissions requested

1 permission declared
No risky permissions
1 permission requested — none are flagged as risky.
Info
https://iss.ndl.go.jp/api/sru

No additional information available.

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Scan performed by extenshi.io · Aug 19, 2026
Browser extensions made transparent.

What this assessment covers

Store listing
Firefox
Checked version
Not provided in this assessment
Current listed version
1.0.3
Assessment updated (UTC)
Assessment status
Completed

Recorded findings: 0 critical and 0 high severity. Read the finding details before interpreting the score; automated flags are not proof of malicious behaviour.

Automated analysis looks for suspicious code, permissions and other risk signals. It does not observe every runtime behaviour or independently audit the publisher’s servers. A low-risk result is not a guarantee of safety. How our checks work.

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