SECURITY REPORT · EXTENSHI SCAN
Storage Copier (Dev Tool)
Firefox extension·by TwoBits Technologies
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
Storage Copier (Dev Tool)'s safety score vs every other extension we've scanned
Globally
19%of extensions carry more risk
Riskier ←→ Safer
Ranked against 368,615 extensions
In Web Development
10%of web development extensions carry more risk
Riskier ←→ Safer
Ranked against 14,206 web development extensions
Findings
13
median 4Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
5
median 3Declared in manifest
Active users
1
median 3vs category median
Findings breakdown
Automated security signal · 13 distinct issues across 6 severities
13
distinct issues
detected
detected
Critical18%
High215%
Needs Review00%
Medium862%
Low215%
Info00%
Permissions requested
3 risky permissions of 5 total
3 high-risk permissions require attention
This extension requests 5 permissions in total. 3 of them grant broad capabilities that are worth a careful look.
High
Access browser cookies
Can read and modify cookies, potentially accessing login sessions
High
Execute scripts in pages
Can inject and execute JavaScript code in web pages
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
Medium
Access current tab
Can temporarily access the content of the active tab when you click the extension
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Scan performed by extenshi.io · Aug 24, 2026
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