Firefox Browser has no warnings published on PrivacySpy. PrivacySpy publishes warnings when it learns a service has announced a data breach or is found misusing user data. If you believe a warning should be published for Firefox Browser, submit one here.
Campaign and Referral Data: This helps Mozilla understand the effectiveness of our marketing campaigns.
On Desktop: Firefox by default sends Mozilla HTTP data that may be included with Firefox’s installer. This enables us to determine the website domain or advertising campaign (if any) that referred you to our download page. Read the documentation or opt-out before installation.
Technical & Interaction Data:
Read the documentation for iOS or Android, or learn how to disable this feature.