IMHO - It would not be "Misuse of Position"
Misuse of Position / Self Dealing
18 U.S.C. Section 656 / 657 - Theft, Embezzlement, or Misapplication of Funds
18 U.S.C. Section 644 - Banker Receiving Unauthorized Deposit of Public Money
18 U.S.C. Section 215 - Bank Bribery
A person, who is not an authorized depositary of public moneys, who knowingly receives from any disbursing officer, collector of internal revenue, or other agent of the United States, public money on deposit, or by way of a loan or accommodation, with or without interest, or otherwise than in payment of a debt against the United States, or uses, transfers, converts, appropriates, or applies any portion of the public money for any purpose not prescribed by law.
I'm thinking "Computer Intrusion" would be the best fit:
Computer Intrusion
18 U.S.C. Section 1030 – Computer Fraud
A person who gains access to a computer system of a financial institution to:
Remove, steal, procure or otherwise affect funds of the institution or the institution's customers
Remove, steal, procure or otherwise affect critical information of the institution including customer account information; or,
Damage, disable or otherwise affect critical systems of the institution.
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My opinions are my own, and not that of my employer.