The most probable beneficiaries are food/gas etc., distributors. Pre Adhaar days they used to create fake ration/gas cards and sell food at un-subsidised prices in black market.
A prime (purported) driver for Adhaar to stop creation of these ghost people. Now that ghost Adhaar accounts can be created (per the report) these distributors will get back to their old ways of making money.
India has lot of poor people so the threat vector isn't yet FB/github :-).
