SECURITY REPORT · EXTENSHI SCAN
Substack Note Scheduler
Chrome extension·by Jenny Ouyang
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
Substack Note Scheduler's safety score vs every other extension we've scanned
Globally
12%of extensions carry more risk
Riskier ←→ Safer
Ranked against 120,711 extensions
In Productivity
27%of productivity extensions carry more risk
Riskier ←→ Safer
Ranked against 25,973 productivity extensions
Findings
30
median 10Lower is safer
Critical findings
3
median 0Severity = Critical
Permissions
3
median 3Declared in manifest
Active users
18
median 23vs category median
Findings breakdown
Automated security signal · 30 findings across 5 severities
30
findings
detected
detected
Critical310%
High13%
Medium2480%
Low27%
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
Medium
Show notifications
Can display desktop notifications outside the browser
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Scan performed by extenshi.io · Jun 25, 2026
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