Here is something that for some reason it didn't strike me until my 7th playthrough. Niket doesn't just confirm Miranda's statement about her Dad being a powerful businessman, Niket actually says her dad is the most richest businessman in the galaxy.
Miranda was taught by him (as was Oriana initially), am thinking 'Dark Angel' style programming of the mind here, this of course would allow Miranda to counter any attempts he has made to locate her and Oriana.
I know we've snowballed this idea before but what if Miranda's dad really was the Shadow Broker.
One thing to point out before someone mentions how long 'The Shadow Broker' has been around, I am referring to the 'current' Shadow Broker. Shadow Broker is just a pseudo-name that any number of people can easily pick up or 'take the torch' so to speak. Which is basically what Miranda's dad wanted of her and then Oriana when Miranda left.
It could also explain why the Shadow Broker was trying to get information about Cerberus in ME. Sure when Cerberus was first starting off Miranda's dad was a backer of them, but when Miranda joined them, they fell out. Naturally Miranda would've done her best to take remove his access to them, so this in my opinion gives mre evidence to her dad being the Shadow Broker.
Just a theory anyway and of course it would nicely tie up 2 stories with 1 stone (Miranda and Liara). Now I'll admit that I've not read any of the 'comic' so I don't know if there is any reference made that could confirm/deny this, as was saying this is just a theory of mine.