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SECURITY REPORT · EXTENSHI SCAN

Is Client Challenge safe?

Checked version: 2025.7.17 · Scan date (UTC): 2026-09-05

Firefox extension·by praschke
58
/ 100 SAFETY SCORE
RISKY
Several elevated signals. Read the findings before sharing this with your team.

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
2%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 435,284 extensions
In Language Support
2%of language support extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 4,632 language support extensions
Findings
107
median 10Lower is safer
Critical findings
2
median 0Severity = Critical
Permissions
11
median 3Declared in manifest
Active users
1
median 3vs category median

Findings breakdown

Automated security signal · 107 distinct issues across 6 severities
107
distinct issues
detected

Permissions requested

5 risky permissions of 11 total
1 critical permission require attention
This extension requests 11 permissions in total. 5 of them grant broad capabilities that are worth a careful look.
Critical
Communicate with desktop apps(optional)

Can exchange messages with applications installed on your computer

High
Execute scripts in pages

Can inject and execute JavaScript code in web pages

High
Access all HTTP sites

Can read and modify content on all non-encrypted websites

High
Access all HTTPS sites

Can read and modify content on all encrypted websites

High
Access local files

Can read files on your local filesystem opened in the browser

Medium
Store local data

Can save data locally in the browser for persistence

Medium
Write to clipboard

Can place content onto your clipboard

Medium
Unlimited local storage

Can store large amounts of data locally without size limits

Medium
Add context menu items

Can add custom items to the right-click context menu

Medium
Read clipboard

Can read text and data currently on your clipboard

Low
Block network requests (declarative)

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

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Scan performed by extenshi.io · Oct 22, 2026
Browser extensions made transparent.

What this assessment covers

Store listing
Firefox
Checked version
2025.7.17
Current listed version
2025.7.17
Scan date (UTC)
Assessment status
Completed

Recorded findings: 2 critical and 4 high severity. Read the finding details before interpreting the score; automated flags are not proof of malicious behaviour.

Automated analysis looks for suspicious code, permissions and other risk signals. It does not observe every runtime behaviour or independently audit the publisher’s servers. A low-risk result is not a guarantee of safety. How our checks work.

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