As discussed in an earlier thread, I also received an email from IHG last week stating my "password had been changed" and was locked out of my account. I was able to get back in after calling, and changing my password.

HOWEVER: In recent days 3 other accounts were compromised, all with the common thread that they had the same email and PW I used on IHG. No issues on any accounts not using that password. That's a very clear indicator to me that IHG has had their security compromised, and the hackers are trying passwords discovered via IHG elsewhere.