SECURITY REPORT · EXTENSHI SCAN
Calendar Background Customizer
Chrome extension·by Seiri
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
Calendar Background Customizer's safety score vs every other extension we've scanned
Globally
54%of extensions carry more risk
Riskier ←→ Safer
Ranked against 370,277 extensions
In Make Chrome Yours
50%of make chrome yours extensions carry more risk
Riskier ←→ Safer
Ranked against 22,987 make chrome yours extensions
Findings
10
median 9Lower is safer
Critical findings
0
median 0Severity = Critical
Permissions
2
median 2Declared in manifest
Active users
4000
median 18vs category median
Findings breakdown
Automated security signal · 10 distinct issues across 6 severities
10
distinct issues
detected
detected
Critical00%
High110%
Needs Review00%
Medium660%
Low330%
Info00%
Permissions requested
1 risky permission of 2 total
1 high-risk permission require attention
This extension requests 2 permissions in total. 1 of them grant broad capabilities that are worth a careful look.
High
View open tabs
Can see URLs and titles of all open tabs
Medium
Store local data
Can save data locally in the browser for persistence
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Scan performed by extenshi.io · Aug 10, 2026
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