SECURITY REPORT · EXTENSHI SCAN
Snipe Alerts: Facebook Marketplace Monitor
Firefox extension·by CarSnipe
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
Snipe Alerts: Facebook Marketplace Monitor's safety score vs every other extension we've scanned
Globally
22%of extensions carry more risk
Riskier ←→ Safer
Ranked against 369,936 extensions
In Alerts & Updates
8%of alerts & updates extensions carry more risk
Riskier ←→ Safer
Ranked against 6,603 alerts & updates extensions
Findings
29
median 4Lower is safer
Critical findings
0
median 0Severity = Critical
Permissions
11
median 3Declared in manifest
Active users
7
median 2vs category median
Findings breakdown
Automated security signal · 29 distinct issues across 6 severities
29
distinct issues
detected
detected
Scanners reported 36 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.
Critical00%
High27%
Needs Review00%
Medium2069%
Low724%
Info00%
Permissions requested
3 risky permissions of 11 total
3 high-risk permissions require attention
This extension requests 11 permissions in total. 3 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
Can see URLs and titles of all open tabs
High
Execute scripts in pages
Can inject and execute JavaScript code in web pages
Medium
Store local data
Can save data locally in the browser for persistence
Medium
Unlimited local storage
Can store large amounts of data locally without size limits
Medium
Show notifications
Can display desktop notifications outside the browser
Low
Schedule tasks
Can schedule periodic background tasks
Low
Block network requests (declarative)
Can block or redirect network requests using predefined rules without seeing content
Info
https://www.facebook.com/*
No additional information available.
Info
https://m.facebook.com/*
No additional information available.
Info
https://web.facebook.com/*
No additional information available.
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Scan performed by extenshi.io · Aug 24, 2026
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