Unauthorised access to Xbox App

[WPCentral Question]

Hi there,

Last week, my Lumia 710 was stolen while I was shopping. On it I had my Xbox, Facebook and Twitter accounts.

As soon as I got home, I changed all my passwords, revoked access to the social media accounts from that device, and basically did everything in my power to render that phone useless for accessing any of my info. I bought a Lumia 520 to replace it with, and restored all the apps.

However, I recently checked my Xbox achievements and noticed two games were in my "recently played"...and I hadn't played them. They were Minesweeper and iStunt 2 - games I had on my previous phone but hadn't touched in months. My Xbox profile shows that they were played in the last couple of days.

Obviously this means someone somehow has access to my Xbox account from that old phone. I'm a bit concerned because despite changing my Xbox password again, my current 520 hasn't asked me to resign into Xbox (like Facebook would if you changed it) which means I assume wouldn't ask the other person to sign in again.

How can I revoke access to Xbox from that 710?

 

[Danjp]

Did you try this https://www.windowsphone.com/en-us/my/find?signin=true to find/erase/lock your phone

 

[switch side method]

What happened is when you signed In on the 520 it activated your account on the other phone too. I could be wrong but that would make sense