Name one common method for securely transmitting customer information.

One common method for securely transmitting customer information is through encryption. Encryption involves converting information or data into a code, making it unreadable to anyone who does not have the decryption key or the proper authorization. This process protects sensitive information, such as personal or financial data, during transmission over the internet or other networks, ensuring that only intended recipients can access and understand the data.

In contrast, methods such as faxing, phone calls, and emailing plain text do not inherently provide robust security measures for transmitting sensitive information. Faxing can be intercepted, phone calls are susceptible to eavesdropping, and emailing plain text leaves the information exposed, making it vulnerable to unauthorized access during transit. Therefore, encryption stands out as a crucial means of safeguarding customer data during its transmission.