infobreach.net is now seer.to. Your account works the same as before.

Username search across 687 sites.

Type a handle to see which of 687 platforms have a live account under it, and which breach records and infected-device logs carry it.

  • Sensitive values censored
  • No account needed

  • Breach records

    Which breaches hold it, and what leaked with it.

  • Infected devices

    Logins stolen by information-stealing malware.

  • Social accounts

    687 platforms checked live for a match.

The check is the preview.
The account is the record.

Create free account Free forever, no card

IncludedFree checkFree account
SearchesA few a day10 searches a day, plus 10 people searches
Breach recordsFirst 3, values blacked outEvery match, plus 2 credential unlocks a week
Infected-device recordsFirst 3, passwords blacked outEvery match and its files, masked
US public recordsCities, area codes and initialsEvery match by name, age and city; full profiles from Basic
MonitoringNot includedEmail alerts on new matches

What a username search checks

A username search takes one handle and finds out where it is registered. This one covers 687 platforms in a single pass: social networks, forums, developer and gaming sites, creator platforms and the long tail of communities that most people forget they joined. Each live profile comes back as a card with the picture, display name and public details the platform shows.

The same handle is searched in breach records and in logs taken from infected computers at the same time. A username used to sign in somewhere is often a username that has leaked somewhere, and a match there shows the service or the site it was saved for.

The same handle is not always the same person

A short or common handle is taken on hundreds of sites by hundreds of different people. A match proves an account exists under that name, not who owns it. Before treating two profiles as one person, look for something that ties them together: a link from one profile to the other, the same picture, the same bio wording, or a join date and activity that fit the same life.

Unusual handles are far more telling than common ones. A handle with a birth year, an in-joke or an odd spelling in it is usually one person everywhere it appears.

Searching your own old handles

Most people have used three or four handles over the years, and the old ones are where the forgotten accounts are. Search each of them, including the ones from school, then close what you no longer use. An abandoned account with a reused password is the easiest way into the accounts you still care about. The guide to checking whether your information has been leaked covers what to do with each kind of match.

What a search will not find

Deleted accounts, accounts that hide from logged-out visitors, and sites outside the list do not show. Neither do other spellings: a search is for the handle exactly as typed, so run the variants with a dot, an underscore or a number at the end as searches of their own.

Questions.

How do I search a username on every site at once?
Enter the handle in a username search. This one checks 687 platforms in one pass and shows each live profile it finds, along with any breach records or infected-device logs that carry the same handle.
What is a reverse username lookup?
The same thing as a username search: starting from a handle and finding the accounts registered under it. "Reverse" means you start from the identifier rather than from a person.
Is this username search free?
Yes, with no account and no card. You get five checks a day, and each one shows up to three matches of each kind with the sensitive values blacked out. A free account shows every match and can watch the identifier for new ones.
Does a matching username mean it is the same person?
No. A match shows that an account exists under that handle. Common handles belong to many people, so look for links between the profiles, a shared picture or bio, or dates that fit before treating two accounts as one owner.
Can a username search find deleted or private accounts?
Deleted accounts no longer exist to be found. A private account usually still shows as existing, but its posts and followers stay hidden. Breach records are the exception: they can show that a handle was registered on a service long after the account itself is gone.