Inside the Data Broker Industry – The Billion-Dollar Trade in Your Private Information

Data brokering is a vast, opaque industry that quietly shapes much of our digital experience. While most people are aware that their data is collected online, few realise the sheer scale, diversity, and permanence of the data broker ecosystem. This article unpacks the world of data brokers, revealing the types of data traded, the companies involved, the domains affected, and what—if anything—individuals can do to protect themselves.

The Scale of Data Brokering

• The global data broker market is projected to reach between $433.9 billion and $616.5 billion by 2030, with an annual growth rate of 7–9%.
• There are estimated to be more than 5,000 data brokers operating worldwide, though the true number is difficult to pinpoint due to the industry’s opacity.
• North America commands the largest share, with the U.S. data broker market alone valued at nearly $100 billion in 2025.

What Data Is Brokered?

Data brokers collect, analyse, aggregate, and sell information from a dizzying array of sources, including:

• Online activities (web browsing, app usage, search history)
• Social media engagement and posts
• Public records (voter registration, property ownership, court records)
• Financial transactions and credit histories
• Health and fitness tracker data
• Purchase histories from retailers and loyalty programs
• Location data from mobile devices and apps

Major Data Broker Companies

Some of the most prominent data brokers include:

• Palantir
• Acxiom
• Experian
• CoreLogic
• Equifax
• Oracle Data Cloud
• Nielsen
• Coresignal
• Bright Data

These companies, among many others, supply data to thousands of clients across the globe. The US government has recently signed executive orders to allow Palantir unprecedented powers to collect and correlate data from all other sources, making it the most significant profiling agency on the planet.

Domains of Data Brokering

Third-Party Data Recipients

• Spotify: Shares listening habits, device information, and user demographics with marketing partners and analytics firms.
• Google: Sells or shares search, location, and browsing data with advertisers, data brokers, and app developers.
• Facebook (Meta): Provides detailed user profiles to advertisers, political campaigners, and third-party app developers.
• Retailers (e.g., Target, Walmart): Sell purchase histories and loyalty card data to brokers, who then repackage and sell it to marketers or insurers.
• Amazon: Collects data from cameras, voice input from voice input devices, browser history, user demographics, location tracking, family associations and more. They currently have one of the best profiling systems in the industry.
• Microsoft: With their operating system on over 90% of all desktop PCs, they continuously collect data, including screen snapshots, camera, microphone and keyboard inputs, demographics and more. This data is used for internal marketing, AI training and also shared with undisclosed third parties (refer. End User Licence Agreement).
• Health Apps: Many free health and fitness apps share sensitive data with brokers, who sell it to insurers or pharmaceutical companies.

The Permanence of Brokered Data

Once your data enters the data broker ecosystem, it is virtually impossible to delete it from every collection. Even services like DeleteMe can only remove information from a subset of brokers—often the most visible or accessible ones. The majority of your data, especially when aggregated and resold multiple times, remains in circulation indefinitely, out of your reach and often out of regulatory oversight.

What Can You Do? Practical Steps to Reduce Your Digital Footprint

While you cannot erase your data entirely, you can take meaningful steps to reduce your exposure:

• Use unique email aliases for every service to make tracking and aggregation more difficult.
• Provide misleading or incorrect information where legal and appropriate (e.g., non-essential form fields).
• Rotate between different search engines and browsers to fragment your online profile.
• Choose privacy-focused alternatives to Google, Facebook, and other major platforms.
• Use a VPN to mask your IP address and encrypt your internet traffic.
• Turn off location services on your devices and apps whenever possible.
• Regularly audit app permissions and remove unnecessary apps.
• Opt out of data sharing and marketing where possible (though this is often limited in scope).
• Periodically request data removal from major brokers via services like DeleteMe, understanding this is only a partial solution.
• Opt out of all operating system telemetry. MS Windows is so pervasive, they have often been criticised for the amount of data they collect in the name of improved user experience. Consider taking the leap into more private computing. The retraining required is well worth the effort.

“It’s almost certain that everyone has had their personal information fall into the hands of a data broker along the data supply chain.”

Why Should I Care?

If the information presented here is of no concern to you, then you should consider this. Your private information can be so comprehensive that it become trivial to completely duplicate your identity for fraudulent purposes. All it takes is a data breach of one or two of these data brokers by criminals to give the criminals enough information to take out a loan, purchase major goods on credit, or even take over your life completely. For this reason alone, this constant collection of your private information will affects everybody. It is not a matter of if, but when!

Conclusion

Data brokering is a multi-billion-dollar industry operating largely out of sight, trading in personal information that touches every aspect of modern life. While total privacy is unattainable, informed individuals can take steps to reduce their exposure and demand greater transparency and accountability from both companies and regulators. The first step is awareness—understanding that what happens in plain sight is only the tip of the iceberg.