Yep, had the e-mail about it, so evidently one of those affected (why is this in the Photography section, by the way?)
I'm not sure why I even had an account in the first place, although I dimly recall I did set one up for some reason. But I don't think I've ever used it since (years). The e-mail confirms they have automatically reset my password, as a precaution, but recommends I also change any other accounts that shared the same ID or password. Although I don't have the identical password everywhere, I do tend to recycle them from the same smallish pool. But I've no idea what the Adobe one used to be, so don't know which other accounts, if any, should be changed. I certainly can't wade through every account I hold with anyone, just in case. Will have to leave it and hope for the best.