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SECURITY REPORT · EXTENSHI SCAN

Youtube Watch Thumbnails

Firefox extension·by mosunset
77
/ 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

Youtube Watch Thumbnails's safety score vs every other extension we've scanned
Globally
31%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 409,539 extensions
In Games Entertainment
10%of games entertainment extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 9,537 games entertainment extensions
Findings
15
median 4Lower is safer
Critical findings
0
median 0Severity = Critical
Permissions
6
median 3Declared in manifest
Active users
27
median 4vs category median

Findings breakdown

Automated security signal · 15 distinct issues across 6 severities
15
distinct issues
detected
Scanners reported 16 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 6 total
1 high-risk permission require attention
This extension requests 6 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
Store local data

Can save data locally in the browser for persistence

Info
*://*.youtube.com/*

No additional information available.

Info
*://m.youtube.com/*

No additional information available.

Info
*://www.youtube.com/*

No additional information available.

Info
*://youtube.com/*

No additional information available.

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Scan performed by extenshi.io · Jul 27, 2026
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