extenshi.io
SECURITY REPORT · EXTENSHI SCAN

Client Challenge

Firefox extension·by tsedlar
66
/ 100 SAFETY SCORE
CAUTION
Mostly fine, but a few things worth reviewing before you install.

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
10%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 391,645 extensions
In Photos Music Videos
4%of photos music videos extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 10,874 photos music videos extensions
Findings
72
median 4Lower is safer
Critical findings
0
median 0Severity = Critical
Permissions
39
median 3Declared in manifest
Active users
9
median 6vs category median

Findings breakdown

Automated security signal · 72 distinct issues across 6 severities
72
distinct issues
detected
Scanners reported 74 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.

Permissions requested

1 risky permission of 39 total
1 high-risk permission require attention
This extension requests 39 permissions in total. 1 of them grant broad capabilities that are worth a careful look.
High
View open tabs

Can see URLs and titles of all open tabs

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 current tab

Can temporarily access the content of the active tab when you click the extension

Medium
Store local data

Can save data locally in the browser for persistence

Info
*://*.myanimelist.net/*

No additional information available.

Info
*://*.kitsu.io/*

No additional information available.

Info
*://*.9anime.to/watch/*

No additional information available.

Info
*://*.9anime.is/watch/*

No additional information available.

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Scan performed by extenshi.io · Sep 11, 2026
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