How do hackers get into a bank?

Hackers get into banks through people and suppliers: stolen logins, insider access, compromised laptops. In Brazil, July 2025, police say an IT worker at bank supplier C&M Software sold access to criminals. Investigators reported R$15,000 in payments, about $2,700. Hackers diverted more than $100 million from 1 institution. The Carbanak gang infiltrated banks through malicious emails to employees. The October 2026 Binance heist reportedly involved a compromised engineer's laptop and additional attack points. AI makes deception cheaper, faster, and more convincing. The vault is only as strong as its cheapest key.