"Security incident?"
While I agree with Sarah in many ways, sometimes a mistake is just a mistake.
An overly broad geographical and time area, in this case -- is not the same as if they were pushing "extenuating circumstanes" to everyone. And depending on the nature of the "incident," people may have misapprehensions about travel-- or on the other hand, (not knowing details), need to suck it up and deal :).
ABB on the other hand, seems to have developed a very high mistake-to-getting-it-right ratio, with little responsiveness to hosts *or* guests. (Growing pains are one thing, and typical in such startups, but they seem to have created a full-fledged, out-of-control bureaucracy where no one is in control or knows what's going on or how to get the most basic things done).
And I'm sure it would be a true pain to try to get anything out of ABB if you were a poor host impacted by this, of course.