The difference is that here many of the leaks are sourced from intelligence material, including information collected through the NSA's spying apparatus (itself of dubious legality). Also, shortly before leaving office Obama enabled the sharing of surveillance material (including "incidental" collection of Americans' data) between some 17 government agencies. 

When the undermining is done by the (illegal activity of the) intelligence/military, this is more than whistle-blowing.