It does matter what information was leaked, not just "information that was supposed to be private". If I read "Data from Atlassian dumped online" the obvious i

It does matter what information was leaked, not just "information that was supposed to be private". If I read "Data from Atlassian dumped online" the obvious inference is that it would be the primary data from Atlassian, i.e. the customer data about customer projects which Atlassian is hosting as the key part of their business. This is not it, this is something much less sensitive that affects much less people - while this is bad, this is absolutely insignificant compared to the level of badness that the title implies.