Managing personal Outlook.com account settings, security, and privacy
Hi Erin Smith
Please note that our forum is a public platform, and we will modify your question to hide your personal information in the description. Kindly ensure that you hide any personal or organizational information the next time you post an error or other details to protect personal data.
I’m sorry this happened. An unfamiliar email signature can indicate that someone accessed your mailbox, so changing your password immediately was the right step. Microsoft also lists suspicious message signatures, forwarding, and inbox rules as possible signs of mailbox compromise.
To remove the signature in Outlook.com:
- Open Settings.
- Select Accounts > Signatures.
- Select the unfamiliar signature, remove it or replace its contents, and select Save.
- Confirm the correct signature is selected for new messages and replies/forwards.
Please also review:
- Settings > Mail > Rules and delete any rule you did not create.
- Settings > Mail > Forwarding and disable any unknown forwarding address.
- Your Sent Items, Deleted Items, and account sign-in activity for anything unfamiliar.
- Your Microsoft account security information, and enable two-step verification. Two-step verification makes it more difficult for someone to sign in even if they know the password.
Do not send further messages until the unfamiliar signature, rules, and forwarding settings have been removed.
Please feel free to let me know if you have any further updates, thanks.
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