FBI: We've been tracking this group for some time. Their MO
is to target wealthy individuals and eventually hack their bannk accounts.
Oliver: Really? For once I'm glad she didn't want me, just my money.
FBI: It's how they seem to get their kicks. They toy with you, keeping you
distracted while they wipe you out. Rob?
FBI: I suggest that you check
your accounts immediately.
Oliver: I just got taken. Robbed?
1) destroy

2) Yes, take in this sense equals to 'take something that isn't yours'.
My ideas:

1. They wiped out his savings in his account. In other words, there's no money in his account now.

2. To be taken = to be cheated.