<human>:  What type of security measures do banks use?
<bot>: Banks use a variety of security measures to help protect customer accounts and sensitive data. These measures include authorization processes such as Multi-factor Authentication (MFA), strong encryption of data and passwords, use of virtual private networks (VPNs) when transmitting data, use of two-way firewall protection, and monitoring for malicious activity. Banks often use additional measures such as biometric authentication, such as fingerprint or retinal scanning, to further secure customer accounts.