SECURITY REPORT · EXTENSHI SCAN
Mr.Shu
Firefox extension·by Nexmoe
0
/ 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
Mr.Shu's safety score vs every other extension we've scanned
Globally
35%of extensions carry more risk
Riskier ←→ Safer
Ranked against 369,936 extensions
In its category
68.97%of its category extensions carry more risk
Riskier ←→ Safer
Ranked within its category
Findings
7
median 10Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
9
median 2Declared in manifest
Active users
113
median 13vs category median
Findings breakdown
Automated security signal · 7 distinct issues across 6 severities
7
distinct issues
detected
detected
Scanners reported 10 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.
Critical114%
High114%
Needs Review00%
Medium571%
Low00%
Info00%
Permissions requested
2 risky permissions of 9 total
2 high-risk permissions require attention
This extension requests 9 permissions in total. 2 of them grant broad capabilities that are worth a careful look.
High
Access browser cookies
Can read and modify cookies, potentially accessing login sessions
High
View open tabs(optional)
Can see URLs and titles of all open tabs
Medium
Access bookmarks
Can read and modify your saved bookmarks
Medium
Store local data
Can save data locally in the browser for persistence
Low
Access favicons
Can retrieve website favicon images
Low
Manage tab groups
Can create and manage tab groups
Info
https://www.bilibili.com/*
No additional information available.
Info
https://roam.mixcm.com/*
No additional information available.
Info
https://www.youtube.com/*
No additional information available.
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Scan performed by extenshi.io · Jul 25, 2026
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