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• Cryptocurrency hacking

Likely―as banks themselves are more likely to be attacked online than in the flesh, and that a physical robbery has several constraints including for example, how much the perpetrator can carry and how much physical cash the branch has on hand.

According to this:

On underground web forums, anyone can freely purchase software to conduct an attack (with detailed "how to" instructions), as well as make the acquaintance of unscrupulous bank employees and money launderers. If properly prepared, an attacker with minimal technical knowledge can steal millions of dollars by penetrating a bank network, although it might seem that such networks should be protected quite well.