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What to do if an unfamiliar phone number appears in your account recovery or security settings.
Short answer
Remove unfamiliar recovery details if you still control the account, change the password, review active sessions, and contact the service if you cannot remove the change.
An unfamiliar recovery number or email address is a security concern because it may give another person a way to reset the account.
If you still have access, change the password and remove unfamiliar recovery details through the official account settings.
Review active sessions, connected applications, security alerts, and recent activity.
If you cannot remove the unfamiliar number or have lost access, use the provider's official recovery process.
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The essentials for keeping your most important accounts locked down.
Open the checkSomething already happened?
If you entered your password on a suspicious website, treat that password as compromised. Go directly to the real service, change it, turn on MFA, and check recent account activity.
If you see activity you don't recognise, secure the affected account directly, change the password, enable MFA, review recent activity and linked devices, and contact the provider if necessary.
If your phone suddenly loses mobile service without an obvious reason and you suspect a SIM swap, contact your mobile provider immediately and secure important accounts using trusted recovery methods.
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