unsafe account info since v147

Don't think I got affected by this, but shortly ago someone sent me a chat invite...

Didn't open it for a while because I didn't recognize the name, nor did I see them on the map. By the time I opened it, no one was there... Google'd if I would be doomed, and dumbingly logged of my character to change my password. Little did I remember that the title screen doesn't show up if you log on from the main site... By the time I tried logging back onto my character, it said I was already online and it disconnected me... Changed my pin/pic on the main site, was able to log back onto my account a couple minutes after I got kicked, thankfully, and saw that nothing... Changed? Confused if it was just a strange coincidence or not...

I get the "This ID is already logged in" or w/e pop-up a few times a day after I dc while logging in. I generally don't worry about it unless it was the first time I tried logging in that day.