SECURITY REPORT · EXTENSHI SCAN
Fastcpy for M$
Firefox extension·by vulpes_velox
How it ranks
Fastcpy for M$'s safety score vs every other extension we've scanned
Globally
99%of extensions carry more risk
Riskier ←→ Safer
Ranked across every extension we scan
In its category
90%of its category extensions carry more risk
Riskier ←→ Safer
Ranked within its category
Findings
0
median 38Lower is safer
Risky permissions
0
median 1Critical + high perms
Total permissions
2
median 4All declared perms
Critical findings
0
median 2Severity = Critical
Findings breakdown
Automated security signal · 0 findings across 5 severities
0
findings
detected
detected
Critical00%
High00%
Medium00%
Low00%
Info00%
Permissions requested
2 permissions declared
No risky permissions
2 permissions requested — none are flagged as risky.
Medium
Show notifications
Can display desktop notifications outside the browser
Info
*://*.mcas.ms/*
No additional information available.
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Scan performed by extenshi.io · Jun 25, 2026· partial run (some scanners failed)
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