Transparent would have been describing exactly what they saw
So the post basically means: "we have no idea what's going on/went on, but here we are, informing you early. Here's the steps we have taken and here's the steps we are going to take"
You can't have everything: On one hand, everyone wants to be notified early (see playstation network breach), on the other hand, people want to know everything when they get the information.
I think that's asking a bit much. Either we get informed early ("we've seen something strange, but we have no idea what's going on") or you want all information ("we've discovered and researched a breach. here is what's happened", followed by a story that spans two weeks).
As lastpass contains potentially sensitive data, I'm happy they chose to inform early, even before they had a complete picture.
(disclaimer: I'm not using LastPass nor any other password manager as the risk of losing access to that and to all the services I used them with is too high for me)
This sounds exactly like the release we got from Sony a few weeks ago, detailing the points of entry, the volumes of data released from their servers, and estimates about who is and isn't affected. And who can forget when Sony told us all exactly what steps they were taking to make sure this wouldn't happen again?
/dumb
Can you point out some examples of "corpspeak" in their notification?