SECURITY REPORT · EXTENSHI SCAN
Client Challenge
Firefox extension·by 5chutil-dev
84
/ 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
Client Challenge's safety score vs every other extension we've scanned
Globally
49%of extensions carry more risk
Riskier ←→ Safer
Ranked against 409,596 extensions
In Feeds News Blogging
25%of feeds news blogging extensions carry more risk
Riskier ←→ Safer
Ranked against 7,338 feeds news blogging extensions
Findings
11
median 4Lower is safer
Critical findings
0
median 0Severity = Critical
Permissions
8
median 3Declared in manifest
Active users
119
median 2vs category median
Findings breakdown
Automated security signal · 11 distinct issues across 6 severities
11
distinct issues
detected
detected
Scanners reported 19 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.
Critical00%
High218%
Needs Review00%
Medium655%
Low327%
Info00%
Permissions requested
2 risky permissions of 8 total
2 high-risk permissions require attention
This extension requests 8 permissions in total. 2 of them grant broad capabilities that are worth a careful look.
High
Observe web requests
Can monitor all network requests made by the browser
High
Block and modify web requests
Can intercept, block, or modify any network request before it completes
Medium
Store local data
Can save data locally in the browser for persistence
Info
https://*.5ch.net/*
No additional information available.
Info
*://*.5ch.net/test/read.cgi/*
No additional information available.
Info
*://*.5ch.net/*/subback.html
No additional information available.
Info
*://*.5ch.net/*/
No additional information available.
Info
*://*.5ch.net/*/?*
No additional information available.
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Scan performed by extenshi.io · Sep 10, 2026
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