What is a data broker?
“Data broker” is a broad description for organisations that collect, combine or supply information about people. Some support advertising or identity checks; others provide business intelligence, risk data or people-search services.
Not every company uses the same sources, and not every record is accurate. The important point is that fragments which seem harmless alone can become more revealing when joined together.
Common sources used to build a profile
- Information you gave to websites, retailers, surveys or loyalty schemes.
- Publicly available records and professional directories.
- Public social profiles, old posts and visible account information.
- Marketing and advertising activity shared between commercial partners.
- Inferred interests or household characteristics based on patterns.
- Previously circulated lists, including inaccurate or outdated records.
A service may use an email address, mobile number, name or location to connect records that appear to describe the same person. Matching is imperfect, which is why profiles can include outdated details or information belonging to somebody else.
Why the information keeps returning
Deleting one listing does not necessarily remove the original source. Another directory may hold its own copy, or the same public record may be collected again later. Removal is therefore a process: identify the controller, use its opt-out or privacy route, record the request and recheck.
A search result is a lead to review, not proof that every detail is current or correct. Confirm the source before acting and avoid sharing extra personal information unless it is genuinely needed to identify the record.
How to reduce future collection
- Share less at sign-up. Leave optional profile fields blank.
- Use separate email aliases. Different addresses make unwanted sharing easier to identify and contain.
- Review public profiles. Hide phone numbers, personal email addresses and unnecessary location history.
- Close unused accounts. Old services can continue holding data after you stop using them.
- Check consent choices. Decline optional marketing and cross-site tracking when it does not benefit you.
Can you ask for deletion in the UK?
You can ask an organisation to erase personal data in certain circumstances. The ICO calls this the right to erasure, but it is not absolute. An organisation may need to keep information for legal obligations, claims or other recognised reasons.
A useful request identifies the record, explains what you want deleted and keeps enough evidence to follow up. Black Bot helps prepare and track a request; you remain in control and send it yourself.