Is Umbra - Block, Pause, Focus & Notes safe?
Checked version: 1.3.1 · Scan date (UTC): 2026-09-20
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
Execute scripts in pages
Can inject and execute JavaScript code in web pages
View open tabs
Can see URLs and titles of all open tabs
Access browser cookies
Can read and modify cookies, potentially accessing login sessions
Access all HTTP sites
Can read and modify content on all non-encrypted websites
Access all HTTPS sites
Can read and modify content on all encrypted websites
Store local data
Can save data locally in the browser for persistence
Access current tab
Can temporarily access the content of the active tab when you click the extension
Monitor navigation
Can observe and track tab navigation events and URL changes
Show notifications
Can display desktop notifications outside the browser
Block requests with host access
Can block or redirect network requests and requires host permissions
Schedule tasks
Can schedule periodic background tasks
Detect idle state
Can detect when your machine is idle, active, or locked
Block network requests (declarative)
Can block or redirect network requests using predefined rules without seeing content
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What this assessment covers
- Store listing
- Firefox
- Checked version
- 1.3.1
- Current listed version
- 1.3.1
- Scan date (UTC)
- Assessment status
- Completed
Recorded findings: 1 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.