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Firefox is no longer supported on Windows 8.1 and below.

Please download Firefox ESR (Extended Support Release) to use Firefox.

Firefox is no longer supported on macOS 10.14 and below.

Please download Firefox ESR (Extended Support Release) to use Firefox.

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Web and Services Bug Bounty Program

Introduction

The Mozilla Bug Bounty Program is designed to encourage security research into Mozilla's websites and services and to reward those who find unique and original bugs in our web infrastructure.

We have migrated our web bug bounty program to HackerOne. Please visit our policy pages to learn more and to submit reports. Mozilla Critical Services and Mozilla Core Services