iPhone 12 Pro Max Unknown phone number in the "TRUSTED PHONE NUMBERS" list

[MacMan988]

Just noticed that there is an unknown phone number in the trusted phone number list of my Apple account.
Does this means my Apple account is hacked?
Are there any legit apps or services that adds phone numbers to the trusted phone numbers list?
I recently installed 1Password and not sure if it has anything to do with this.

I've already changed the password for my Apple ID. Is there anything else to do to make sure it is secure?

 

[Allyance]

My trusted number is my own iPhone number. Was this a used iPhone or a member of your family?
If you do not recognize the number, then ad your own, then delete the unknown.

 

[adrianlondon]

Not heard of this before. No app would do that, including a password manager.

Remove the phone number. Check your contacts to see if it's in there - maybe you added it a while ago and forgot?

Google tells me the number belongs to a plumber in Philadelphia!