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SECURITY REPORT · EXTENSHI SCAN

Client Challenge

Firefox extension·by SIH
22
/ 100 SAFETY SCORE
DANGEROUS
Meaningful risk surface. Avoid on managed devices without review.

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
0%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 409,539 extensions
In Games Entertainment
0%of games entertainment extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 9,537 games entertainment extensions
Findings
756
median 4Lower is safer
Critical findings
3
median 0Severity = Critical
Permissions
91
median 3Declared in manifest
Active users
281
median 4vs category median

Findings breakdown

Automated security signal · 756 distinct issues across 6 severities
756
distinct issues
detected
1 square ≈ 2 issues
Scanners reported 777 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.

Permissions requested

3 risky permissions of 91 total
1 critical permission require attention
This extension requests 91 permissions in total. 3 of them grant broad capabilities that are worth a careful look.
Critical
Manage other extensions

Can enable, disable, or uninstall other browser extensions

High
Observe web requests

Can monitor all network requests made by the browser

High
Access browser cookies

Can read and modify cookies, potentially accessing login sessions

Medium
Show notifications

Can display desktop notifications outside the browser

Medium
Store local data

Can save data locally in the browser for persistence

Medium
Unlimited local storage

Can store large amounts of data locally without size limits

Medium
Access current tab

Can temporarily access the content of the active tab when you click the extension

Low
Schedule tasks

Can schedule periodic background tasks

Low
Block network requests (declarative)

Can block or redirect network requests using predefined rules without seeing content

Low
View blocked request stats

Can see which declarative rules matched network requests

Info
*://steamcommunity.com/tradeoffer/*

No additional information available.

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Scan performed by extenshi.io · Aug 24, 2026
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