Firefox
Owned by Mozilla Corporation
mozilla.org ↗Privacy Panel Label
Privacy Panel
Firefox (Mozilla)
Data Collected
●Precise Locationsensitive
Precise location
○App Usage & Diagnostics
Technical data
Settings data
System performance data
Interaction data
IP-derived location
Language preference
Crash report data
Content data
○Browsing & Search History
Browsing data
Search data
○Device & Online IDs
Unique identifiers
IP address
○Contact Info
Contact data
○Photos, Videos & Audio
Uploaded images
Data Sharing & Use
noSold to third parties
5 recipient categories (Partners, service providers, suppliers and contractors, Authorities (law enforcement, government authorities), Researchers, …)
YESShared for advertising
noCross-site tracking
YESUsed for profiling / AI decisions
noUsed to train AI models
YESDisclosed to law enforcement
Data Uses
Core serviceSecurity / fraudAdvertisingPersonalizationAnalyticsThird-party partnerships
Data Retention
25 months
Varies by data type
Includes legally mandated retention
Mozilla generally retains personal data for no more than 25 months, but actual r…
Consumer Rights
Access
Delete
Portability
Correct
Opt-out
Security
Encrypted in transit
Encrypted at rest
?
MFA available?
Breach notificationBrowser Privacy Signals
honoredGPC / DNT
This label summarizes privacy practices as disclosed in the company's privacy policy. This is not legal advice. Full policy ↗
This label summarizes privacy practices as disclosed in the company's privacy policy. It is a neutral, factual restatement — not an evaluation. What is this?
Source Evidence
Report an issueIf a specific extraction below looks wrong (the quote does not match the policy, or the YES/no is misinterpreted), use the per-finding flag to help us improve.
What's on the label
Sold to third parties
no85% confidence
Firefox does not share information like your browsing history, search queries, or saved passwords with marketing technology partners. Mozilla only collects the data necessary to measure and improve our marketing campaigns.
Shared for advertising
YES95% confidence
This data may be shared with our advertising partners on an aggregated and/or de-identified basis.
Cross-site tracking
no75% confidence
Firefox also provides Global Privacy Control (GPC), which you can enable to automatically notify websites not to sell or share information about your browsing session on that website.
Used for profiling
YES85% confidence
In some regions, we use this data to build models and group users based on common attributes. These groupings help us understand how people are interacting with our content and to personalize future content, including sponsored content.
Used to train AI
no90% confidence
These operate locally — web page content, PDFs, images and tab URLs stay on your device and are not sent to Mozilla's servers or used for training purposes without your explicit consent.
Signals & rights
Honors GPC
YES99% confidence
Firefox also provides Global Privacy Control (GPC), which you can enable to automatically notify websites not to sell or share information about your browsing session on that website. GPC operates as a "Do Not Sell" mechanism in some US states such as California, Colorado and Connecticut.
Sources / Provenance
Analyzed June 3, 2026 · policy fetched June 3, 2026
Archived copy: not yet available
Source hash: 59166f66ecef…