Guides · 24 August 2026 · 7 min read

How to Block Data Brokers From Selling Your Data

A step-by-step guide to blocking data brokers from collecting and selling your personal information, including opt-outs, suppression and legal demands.

You block data brokers by opting out of each one directly, adding suppression requests where they are offered, and sending legal deletion demands under privacy laws such as the CCPA. There is no single switch that blocks all of them at once. Each broker holds its own copy of your data, so you have to deal with them one at a time.

Blocking is not the same as deleting. Deleting removes a record that already exists. Blocking is about stopping the broker from collecting, displaying or selling your data going forward. In practice you need both, because a record you delete today can be rebuilt tomorrow from the same upstream sources.

Why brokers are hard to block permanently

Data brokers do not gather your information once and stop. They pull continuously from public records, marketing lists, app data, loyalty schemes and other brokers. When you remove a listing, the broker often rebuilds it from those same feeds. Listings typically reappear within a few months.

This is why blocking is an ongoing task, not a one-off. The goal is to reduce your exposure and keep it low, not to reach a permanent zero.

You also cannot block or delete public records. Court filings, property records, corporate registrations and voter rolls are public by law. A broker may repackage that information, and you can ask the broker to stop showing it, but the underlying record stays public at its source.

Step by step: how to block data brokers

1. List the brokers that hold your data. Search your own name, plus your name with your city or old addresses, in a private browser window. Note every people-search site and broker that returns a profile on you. Keep this list somewhere you can update it.
2. Find each broker's opt-out or privacy page. Most brokers publish a page for privacy requests, often linked in the site footer under terms like "Privacy", "Do Not Sell My Info" or "Opt Out". Open it and read what it asks for before you start.
3. Submit the opt-out request. Follow the process exactly as the broker sets it out. Some ask you to find your own listing first and remove that specific record. Others ask for your name, address and email. Provide only what is required. Do not hand over extra identity documents unless the process genuinely cannot proceed without them.
4. Ask for suppression, not just removal. Where the broker offers it, request that your details be suppressed or blocked from future listings. Suppression tells the broker to keep a record of you specifically so it can avoid re-adding you. Not every broker offers this, but use it where it exists.
5. Send a formal deletion and do-not-sell demand. If you are covered by a privacy law such as the CCPA, you can send a written demand asking the broker to delete your personal information and to stop selling or sharing it. State clearly that you are exercising your rights to deletion and to opt out of sale. Many brokers route this through the same privacy page, but you can also send it in writing to their listed privacy contact.
6. Confirm your identity if asked. Brokers are allowed to check you are who you claim to be before acting. Respond to any verification email or step. If a broker demands far more than needed to confirm identity, push back and ask what the legal basis is.
7. Record every request. Save the date, the broker name, the method you used and any reference number or confirmation email. You will need this if a listing reappears and you have to repeat the request.
8. Recheck in a few months. Search your name again on the same sites. Where your data has returned, submit the opt-out and demand once more. This recheck cycle is the real work of blocking brokers.

Reduce the supply at the source

Blocking the brokers you can see is only half the job. The other half is cutting off what feeds them.

• Tighten marketing consent. Where a service offers a way to opt out of having your data shared or sold, use it. This limits one of the feeds brokers buy from.
• Limit app permissions. Review location, contacts and other permissions on your phone. Location and contact data are widely traded.
• Use fewer identifiers. Consider a dedicated email address for sign-ups and loyalty schemes. It makes your marketing profile easier to isolate and control.
• Be careful with free lookups. Searching for yourself on a broker site can itself be treated as interest data. Use a private browser window and avoid entering more than you must.

None of this touches public records, and it will not remove data brokers already hold. It slows the rate at which new data reaches them.

Handling records you cannot delete

When a listing is built on public records, focus on what you can control. You can ask a broker to stop displaying and selling its packaged version. You cannot demand the court, land registry or electoral body erase the original. If a broker refuses to remove a repackaged public record, its own privacy policy and the relevant law still govern how it may use and sell that data, so a do-not-sell request may still apply even where deletion does not.

Keep it going

Blocking data brokers works best as a routine. Set a reminder to recheck your name every few months, keep your list of brokers current, and resubmit requests as listings return. Treat it like weeding, not building a wall.

Doing this by hand across dozens of brokers takes time, and the recheck cycle never really ends. Vanish is a Mac app that automates the same process: it finds where brokers have published your details and sends CCPA deletion demands on your behalf, then keeps checking. It does the repetitive part so you do not have to track every broker yourself.

Whether you do it manually or use a tool, the principle is the same. Block what you can, cut off the supply, and expect to repeat the work.