A background check, in the everyday sense, means gathering what is already public about an identity and putting it in one place. Investigators, fraud and trust-and-safety teams, and people auditing their own exposure do this with free tools, or with a search service that pulls the same kinds of records automatically. This guide explains how public records research works, what such a search can reasonably show, and the legal limits you have to understand before you start.
What a background check actually is
In plain terms, a background check is structured research built from information that is already accessible. The details come from public records, online profiles, and data that has leaked in past breaches. None of it is secret. You are not hacking anything or pulling a credit file. You are collecting scattered, already-public details and connecting them to a single identifier: a name, an email, a username, or a phone number.
The accuracy of the result depends on how common the name is, how much has been shared online, and whether the records are current. A search tied to a rare name with an active online presence looks very different from one tied to an identifier that leaves almost no footprint.
Public records
Public records are the backbone of most searches. These include things like property ownership, court filings, business registrations, marriage and divorce records, voter registration in some states, and professional licenses. Much of this is held by county and state agencies and can be searched directly, though it is spread across hundreds of separate websites with no shared format.
These records can show where an identity has been associated with an address, whether a home or business is owned, and whether a name has appeared in civil or criminal court. They will not reveal anything an agency never recorded, and they can lag behind real life by months or years.
Social profiles
Public social profiles fill in the human side of a footprint. Accounts can surface an employer, a hometown, interests, photos, and connected accounts. Usernames matter here: the same handle often appears across many platforms, which is the core of any username search and one of the strongest links in open-source research.
Profiles are easy to find but easy to misread. People use nicknames, set old accounts to private, and post things that are out of date or simply untrue. Treat anything you find as a lead to verify, not as proven fact.
Breach and leak data
Over the years, large volumes of personal data have leaked from hacked companies. This breach data often includes email addresses, phone numbers, old passwords, and the accounts they were tied to. Searching it can confirm that an email is real, link an email to a phone number, or surface accounts an owner forgot they had, which is exactly why checking your own exposure in this data matters as much as any outward research.
Revealer's dataset draws on 38 billion+ records of this kind, which is why a single email or phone number can return connected details that would take hours to assemble by hand. To see where your own identifiers appear, start with a data breach lookup.
What a search can and cannot tell you
A thorough search can establish an identity, contact details, likely locations, public affiliations, and a general picture of an online footprint. Within an authorized investigation, such as fraud prevention, threat intelligence, due diligence you are lawfully entitled to perform, or an audit of your own exposure, it is a fast way to consolidate scattered public data.
It cannot read minds or predict behavior, and it cannot guarantee that any single record is accurate or up to date. Records get out of sync, names overlap, and absence of a record does not prove absence of an event. Always confirm anything important through a second source before you act on it.
The legal limit you must respect
This is the part that matters most. An OSINT and public-records search is not a consumer report under the Fair Credit Reporting Act (FCRA). It is not produced by a consumer reporting agency, it is not verified to FCRA standards, and it may not be used to make decisions about employment, hiring, housing, tenancy, credit, insurance, or any other purpose covered by that law. If you need a background check for any of those reasons, you must use a properly licensed FCRA-compliant screening service instead. Using public-records data for those decisions is against the law and against our terms of use.
Used within those limits, a background check is a fast way to gather the public information attached to a name, email, or phone number and to see where those identifiers are exposed.
Getting started
You can do this research manually, but it is slow and easy to get wrong. If you want to skip the legwork, enter an email, phone number, username, or name on our background check page and let the search pull connected public records and breach data for you, for authorized research and for checking your own exposure, within the legal limits above.