SECURITY REPORT · EXTENSHI SCAN
YouTube Cookie Sync
Firefox extension·by mhaii
0
/ 100 SAFETY SCORE
EXCELLENT
Looks clean. No meaningful risks detected in this scan.
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 Cookie Sync's safety score vs every other extension we've scanned
Globally
55%of extensions carry more risk
Riskier ←→ Safer
Ranked against 369,936 extensions
In Download Management
38%of download management extensions carry more risk
Riskier ←→ Safer
Ranked against 4,307 download management extensions
Findings
9
median 4Lower is safer
Critical findings
0
median 0Severity = Critical
Permissions
3
median 4Declared in manifest
Active users
1
median 9vs category median
Findings breakdown
Automated security signal · 9 distinct issues across 6 severities
9
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.
Critical00%
High111%
Needs Review00%
Medium667%
Low222%
Info00%
Permissions requested
1 risky permission of 3 total
1 high-risk permission require attention
This extension requests 3 permissions in total. 1 of them grant broad capabilities that are worth a careful look.
High
Access browser cookies
Can read and modify cookies, potentially accessing login sessions
Medium
Store local data
Can save data locally in the browser for persistence
Info
https://*.youtube.com/*
No additional information available.
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Scan performed by extenshi.io · Aug 25, 2026
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