Authentication notice
Hi- this may sound like a bit of an odd question, and I'm not entirely sure what happened if I'm honest?
I was using my MacBook Air when I randomly got an authentication notice that popped up on my phone saying that I had recently signed into iMessage on a 'new device'. Said new device being the MacBook Air that I was using (and which definitely wasn't new or recently signed onto?) My MacBook also for some reason had logged me out of my iMessages? Any idea what might have gone on here- is it a glitch? Or something else entirely. Either way, I have changed my password just to be safe but I am a little confused.
MacBook Air