SECURITY REPORT · EXTENSHI SCAN
Fastmail Checker
Chrome extension·by Mave
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
Fastmail Checker's safety score vs every other extension we've scanned
Globally
91.14%of extensions carry more risk
Riskier ←→ Safer
Ranked across every extension we scan
In its category
81.14%of its category extensions carry more risk
Riskier ←→ Safer
Ranked within its category
Findings
6
median 38Lower is safer
Risky permissions
0
median 1Critical + high perms
Total permissions
6
median 4All declared perms
Critical findings
0
median 2Severity = Critical
Findings breakdown
Automated security signal · 6 findings across 5 severities
6
findings
detected
detected
Critical00%
High00%
Medium350%
Low350%
Info00%
Permissions requested
6 permissions declared
No risky permissions
6 permissions requested — none are flagged as risky.
Medium
Show notifications
Can display desktop notifications outside the browser
Medium
Store local data
Can save data locally in the browser for persistence
Medium
Add context menu items
Can add custom items to the right-click context menu
Medium
Access user identity
Can get OAuth2 tokens and access your Google account identity
Low
Schedule tasks
Can schedule periodic background tasks
Low
Create offscreen documents
Can create hidden documents for background processing tasks
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Scan performed by extenshi.io · Jun 25, 2026· partial run (some scanners failed)
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