SECURITY REPORT · EXTENSHI SCAN
Moster Sites
Firefox extension·by Haikel Fazzani
0
/ 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
- The developer's website is no longer reachable
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
Moster Sites's safety score vs every other extension we've scanned
Globally
30%of extensions carry more risk
Riskier ←→ Safer
Ranked against 369,936 extensions
In Search Tools
11%of search tools extensions carry more risk
Riskier ←→ Safer
Ranked against 15,409 search tools extensions
Findings
17
median 4Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
8
median 3Declared in manifest
Active users
0
median 2vs category median
Findings breakdown
Automated security signal · 17 distinct issues across 6 severities
17
distinct issues
detected
detected
Scanners reported 19 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.
Critical16%
High529%
Needs Review00%
Medium741%
Low16%
Info318%
Permissions requested
5 risky permissions of 8 total
1 critical permission require attention
This extension requests 8 permissions in total. 5 of them grant broad capabilities that are worth a careful look.
Critical
Access to all websites
Can read and modify content on every website you visit
High
Access browsing history
Can read and modify your complete browsing history
High
View most visited sites
Can see your most frequently visited websites
High
Manage downloads
Can initiate downloads and access your download history
High
View open tabs
Can see URLs and titles of all open tabs
Medium
Access current tab
Can temporarily access the content of the active tab when you click the extension
Medium
Access bookmarks
Can read and modify your saved bookmarks
Medium
Store local data
Can save data locally in the browser for persistence
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Scan performed by extenshi.io · Aug 18, 2026
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