SECURITY REPORT · EXTENSHI SCAN
Costras Extension
Chrome extension·by ls23yim
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
Costras Extension's safety score vs every other extension we've scanned
Globally
16%of extensions carry more risk
Riskier ←→ Safer
Ranked against 369,936 extensions
In Lifestyle
16%of lifestyle extensions carry more risk
Riskier ←→ Safer
Ranked against 43,972 lifestyle extensions
Findings
59
median 12Lower is safer
Critical findings
0
median 0Severity = Critical
Permissions
7
median 1Declared in manifest
Active users
0
median 26vs category median
Findings breakdown
Automated security signal · 59 distinct issues across 6 severities
59
distinct issues
detected
detected
Critical00%
High35%
Needs Review00%
Medium4678%
Low1017%
Info00%
Permissions requested
4 risky permissions of 7 total
4 high-risk permissions require attention
This extension requests 7 permissions in total. 4 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
High
Observe web requests
Can monitor all network requests made by the browser
Medium
Store local data
Can save data locally in the browser for persistence
Medium
Access user identity
Can get OAuth2 tokens and access your Google account identity
Info
windows
No additional information available.
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Scan performed by extenshi.io · Aug 18, 2026
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