Is Client Challenge safe?
Checked version: 1.18.0 · Scan date (UTC): 2026-10-23
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
Findings breakdown
detected
Permissions requested
Communicate with desktop apps
Can exchange messages with applications installed on your computer
Manage other extensions
Can enable, disable, or uninstall other browser extensions
Access browsing history
Can read and modify your complete browsing history
View open tabs
Can see URLs and titles of all open tabs
Developer tools
Can extend browser developer tools with custom panels
Access user identity
Can get OAuth2 tokens and access your Google account identity
Access bookmarks
Can read and modify your saved bookmarks
Store local data
Can save data locally in the browser for persistence
Unlimited local storage
Can store large amounts of data locally without size limits
Show notifications
Can display desktop notifications outside the browser
Detect idle state
Can detect when your machine is idle, active, or locked
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What this assessment covers
- Store listing
- Firefox
- Checked version
- 1.18.0
- Current listed version
- 1.18.0
- Scan date (UTC)
- Assessment status
- Completed
Recorded findings: 2 critical and 3 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.