SECURITY REPORT · EXTENSHI SCAN
5CH STYLE FORMAT 2017(ff)
Firefox extension·by ぼや
86
/ 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
5CH STYLE FORMAT 2017(ff)'s safety score vs every other extension we've scanned
Globally
57%of extensions carry more risk
Riskier ←→ Safer
Ranked against 409,596 extensions
In Feeds News Blogging
29%of feeds news blogging extensions carry more risk
Riskier ←→ Safer
Ranked against 7,338 feeds news blogging extensions
Findings
9
median 4Lower is safer
Critical findings
0
median 0Severity = Critical
Permissions
8
median 3Declared in manifest
Active users
566
median 2vs category median
Findings breakdown
Automated security signal · 9 distinct issues across 6 severities
9
distinct issues
detected
detected
Critical00%
High111%
Needs Review00%
Medium556%
Low333%
Info00%
Permissions requested
1 risky permission of 8 total
1 high-risk permission require attention
This extension requests 8 permissions in total. 1 of them grant broad capabilities that are worth a careful look.
High
Access browser cookies
Can read and modify cookies, potentially accessing login sessions
Medium
Add context menu items
Can add custom items to the right-click context menu
Medium
Store local data
Can save data locally in the browser for persistence
Info
https://headline.5ch.net/bbynews/
No additional information available.
Info
*://*.5ch.net/test/read.*/*/*
No additional information available.
Info
*://*.bbspink.com/test/read.*/*/*
No additional information available.
Info
*://*.5ch.net/*/subback.html
No additional information available.
Info
*://*.bbspink.com/*/subback.html
No additional information available.
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Scan performed by extenshi.io · Sep 7, 2026
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