[Globz]

I am not using HipChat but I am using Trello and now that they have been acquired by Atlassian I wonder if they linked all of Trello's accounts to an Atlassian ID?

  As an added precaution, we have reset your Atlassian ID 
  which is used to access all Atlassian services

[bArray]

Possibly, it's worth resetting to step on the side of caution. Good to occasionally rotate your passwords anyway!