NY City Councilman's Aides Rip Off 3 Nonprofits for $145,000

Two New York City Councilman's Aides ripped off 3 nonprofits for $145,000.

According to the New York Times, the aides actually "controlled" three nonprofits and redirected funds to themselves.

How can this happen?  I understand how the Aides could get away with transferring money from the Councilman's budget (although I have previously discussed how crazy this practice is) but where was the rest of the board of the 3 nonprofits?  What does "control" actually mean?  And where are the nonprofit's auditors?  Don't they have some responsibility here?

IRS where are you?  New York citizens, where are you?