Jazzed GAME OVER, eHarmony hacked again???

I seems eHarmony was hacked again.  
Who could benefit most from that situation?

The “Russians” again???
As if they were in the cold war era.

Several online dating sites, like PlentyOfFish and eHarmony HAD BEEN ALERTED IN ADVANCE, since 2009 about security holes, but they had not paid the attention it deserved.