To get Illegal Transaction Records:
** You must do the job called "Steal Bank Records", in the Capo Job tier. They are a random drop.
** You can also get Illegal Transaction Records from fighting. These are also a random drop.
** Also you need total number of 424 of these to complete New York level.
There were some Cargo quests that give you a 'load' of those or maybe the Untraceable Cellphones. You can send them as a gift, so ask a friend to send you some! I am not sure if they have jobs that give you them, but I am sure they have jobs that require those items.
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