uMatrix extension
Security at a glance
High riskSafety score 39/10034 findings
Automated estimate from our latest scan (malware, permissions, obfuscation) — not a security audit. Higher safety score is better.
See the full security reportFirefox listing ID: umatrix
Permissions (11)
- Access to all websites
- Delete browsing data
- Access browser cookies
Related extensions
Frequently asked questions
Is uMatrix safe to use?
Our latest automated scan rates the Firefox listing of uMatrix at 39/100 (high risk) — malware, permission and obfuscation checks combined. The full report lists every finding behind the number.
What permissions does uMatrix require?
uMatrix requests 11 permissions. The most significant: Access to all websites, Delete browsing data, Access browser cookies. See the full breakdown in the security report.
Who develops uMatrix?
uMatrix is published by Raymond Hill. Impersonators copy popular extension names, so always verify the developer line and listing id on the store page before installing.