8.6
Violentmonkey
🌐 Chrome ExtensionUnknown
An open source userscript manager that supports a lot of browsers
600,000 usersRating: 4.6/5v2.41.0
Low Risk8.6/10
Scanned June 2, 2026
Risk Flags
Critical permission: "cookies" — read and modify cookies for any site
7.5
Permissions
7.5
Developer
10.0
Data Privacy
10.0
Policy Match
Permissions (10)
Read your open tabs and navigation activity
tabsacceptable
Common for ad blockers — used by most tools in this category
Access all websites you visit
<all_urls>expected
Standard for ad blockers — this permission is required for core functionality
Observe and analyze all web traffic
webRequestexpected
Standard for ad blockers — this permission is required for core functionality
Intercept and modify web traffic
webRequestBlockingexpected
Standard for ad blockers — this permission is required for core functionality
Show desktop notifications
notificationsunusual
Uncommon for ad blockers but not necessarily a concern
Store data locally in the browser
storageexpected
Standard for ad blockers — this permission is required for core functionality
Unknown permission: unlimitedStorage
unlimitedStorageacceptable
Common for ad blockers — used by most tools in this category
Write to your clipboard
clipboardWriteunusual
Uncommon for ad blockers but not necessarily a concern
Add items to right-click menus
contextMenusexpected
Standard for ad blockers — this permission is required for core functionality
Read and modify cookies for any site
cookiesunusual
Not typical for ad blockers — review why this is needed
Developer
NameNot disclosed
Verified PublisherYes
Known EntityNot recognized
Data Flows
Extension background service
Encryptedcookies, tab data
Privacy Policy Analysis
Policy Status
Policy found
https://violentmonkey.github.io/privacy/
Actual Data Collection
- cookies
- tab data
Policy matches observed behavior
Alternatives to Consider
Know what your tools are really doing.