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If you think your account was taken over

A checklist for when someone else may have used your account, in the order that cuts them off fastest, with how to check what they did.

On this page

You may think so because of an alert email you did not expect, an event in Notifications you did not cause, a sign-in you do not recognise, or because you gave a secret to a fake page. This page puts the steps in the order that cuts an attacker off fastest, then helps you work out what happened. If you are not sure, doing the steps costs you little: you sign in again and may add a passkey.

If you can still sign in#

  1. Use a device you trust and a browser you control. Open the sign-in page from a bookmark, not from an email.
  2. Sign out everywhere. Open Devices and select Sign out everywhere. This ends every session on your account, including the one you are using, and the apps those sessions signed in to lose access. Sign in again.
  3. Change your password, if you have one. On Security, Password, enter the Current password and a New password. Saving signs your other devices out. Tick Also revoke my personal access tokens if the form offers it. If you used the same password anywhere else, change it there too.
  4. Check your passkeys. On Security, Passkeys, remove any passkey you do not recognise with Remove passkey. Removing one also signs your other devices out.
  5. Check your second step. On Two-step verification, turn off and set up again an authenticator app you did not add or no longer control. Create a new set of recovery codes with Create a new set: the old codes stop working at once.
  6. Check your email addresses. On Profile, Email addresses, look for an address you did not add or a primary address you did not choose. If your primary address was changed, the old address was emailed a Revert the change link.
  7. Check connected apps under Apps and access and Revoke access for any you do not recognise.
  8. Check personal access tokens. Search Search settings for personal access tokens. Select Revoke all tokens if you have any you did not create.
  9. Review what happened. See below.

Each step is a sensitive change, so the page may ask you to confirm with a passkey or an authenticator code first, and you will receive security alert emails about your own changes. That is expected. See What a security alert email means.

If you got a New sign-in to your account email, you can also use its Review this sign-in link and choose No, secure my account. That ends every session, sign-in token and personal access token and forgets your devices. It does not change your password, so still do step 3.

If you cannot sign in#

Someone may have changed your sign-in methods. Use another method you have, such as a passkey on another device or a recovery code. If nothing works, start account recovery from a browser you control. See If you are locked out. Recovery signs you out everywhere and lets you set new sign-in methods. Recovery can have a wait, and the platform emails every verified address with a Cancel recovery button, so check that nobody else started one. If an attacker started recovery, cancelling it stops it.

Work out what happened#

Your account keeps a record of security events. Two places show it.

  • Notifications, Inbox: security events newest first. Events worth a second look carry a Review or Review now badge. Mark all as read clears the markers.
  • Your data, Activity: security-relevant events on your account from the last 90 days, newest first.

Also look at Overview, which counts sign-ins over the last 30 days, with any failed or blocked attempts, and lists recent activity. Devices lists every session with its device, location, address, when it was signed in, last active and sign-in method. A session you do not recognise may be a sign of a takeover. The method column shows whether it used a Passkey or Password.

Things to look for:

  • a sign-in at a time and place you were not at,
  • a passkey, password or authenticator change you did not make,
  • a new address or a changed primary address,
  • an app you did not allow,
  • a data export request you did not make (Data export requested.).

If an attacker used your account#

  • Tell your organization's administrator if the account belongs to an organization.
  • Tell any services that rely on this account that you changed your sign-in methods.
  • If you gave a secret to a fake page, assume it is known. Change it everywhere it is used.
  • Report a weakness. If the way in was a flaw in identity itself, tell us. See Reporting a vulnerability.

Then make it harder#

  • Add a passkey and make it your main way in. See Add a passkey.
  • Keep recovery codes somewhere safe. See Keeping recovery codes safe.
  • Add a second verified email address so an alert still reaches you if one mailbox is lost.
  • Run the Checkup on the Security area and clear what it lists.

What this page does not promise#

The steps end your sessions and cut off the credentials you can see. They cannot undo what someone did while they had access, such as data they read. The platform does not publish a response commitment for individual accounts. For how TDACorp handles security incidents in general, see Incident response.

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