What is Data broker?
A data broker is a business that collects and sells personal information about people it has no direct relationship with; several US states require brokers to register.
Also called: data vendor.
California's definition is a business that knowingly collects and sells to third parties the personal information of a consumer with whom the business does not have a direct relationship. California's law has no business-to-business exemption in that definition, and it charges $200 a day for failing to register. In December 2025 the state's privacy regulator announced a $56,600 fine against a marketing company for not registering.
Other states differ. Texas, Oregon and Vermont run registries too, and some exempt publicly available business information. Whether a seller of business contact data counts as a broker depends on what it holds: a company's main phone and info@ address are business information; an owner's name and personal email can be personal information.
For a buyer, the practical questions are where the vendor's data comes from, whether people can opt out, and whether opt-outs stay out when the vendor refreshes; see suppression list.
The methodology page says where 67Leads data comes from and how opt-outs work. This entry is a summary, not legal advice.