Is Shadowmute safe?
Checked version: 0.2.0 · Scan date (UTC): 2026-08-24
Likely abandonedsafety score reduced by 30 points
- No update in over 7 years
- The developer's website is no longer reachable
Why this matters
An unmaintained extension keeps whatever flaws it shipped with, and a listing with users but no owner is an attractive target to buy and repurpose.
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
Access current tab
Can temporarily access the content of the active tab when you click the extension
Store local data
Can save data locally in the browser for persistence
Access user identity
Can get OAuth2 tokens and access your Google account identity
Write to clipboard
Can place content onto your clipboard
https://api.shadowmute.com/*
No additional information available.
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What this assessment covers
- Store listing
- Firefox
- Checked version
- 0.2.0
- Current listed version
- 0.2.0
- Scan date (UTC)
- Assessment status
- Completed
Recorded findings: 0 critical and 0 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.