Comment by pamcake

> Our thought process was that we didn't want to recommend that people roll keys when we couldn't possibly confirm that we confidently plugged the breach and rolled the mitigation(s). I am comfortable to publicly say that this was a highly motivated attacker. Meanwhile, our threat team mitigates DDoSes, CVEs, while been patching everything immediately as dealt with exploits.

> As for this breach in particular, we tried to balance a duty to warn, which we take very seriously... However, it took a significant amount of time on the order of hours to verify, reviewing, and keep up with the attacker as they attempted to move laterally around, and briefly, within the system. We didn't want message anything beyond a shadow of a doubt that there were no further exploit paths.

Once you realize there is compromise, you message accordingly, as soon as you are able. If you can't immediately determine exactly what subset of customers were affected, this means you have to tell everyone. Then you provide follow-up updates to fill in gaps as you develop your understanding of scope+impact and work on remediation.

What you should never do is hold off on reaching out to possibly affected stakeholders that they may be affected by a compromise because you still have uncertainties about current status.

A situation like this does not in any way a constitute a dilemma or tough balance regarding when or to whom to do initial disclosure - you do it as soon as you can, to everyone except those you know are not impacted.