Is kWh-GRS safe?
Checked version: 0.5.3.2 · Scan date (UTC): 2026-08-15
Likely abandonedsafety score reduced by 30 points
- No update in over 6 years
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 to all websites
Can read and modify content on every website you visit
View open tabs
Can see URLs and titles of all open tabs
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
Access local files
Can read files on your local filesystem opened in the browser
Store local data
Can save data locally in the browser for persistence
Write to clipboard
Can place content onto your clipboard
Show notifications
Can display desktop notifications outside the browser
Add context menu items
Can add custom items to the right-click context menu
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What this assessment covers
- Store listing
- Firefox
- Checked version
- 0.5.3.2
- Current listed version
- 0.5.3.2
- Scan date (UTC)
- Assessment status
- Completed
Recorded findings: 1 critical and 5 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.