Final answer:
The option that does not represent a best practice for protecting customer privacy is 'C. Share customer information openly,' as it violates principles of maintaining confidentiality.
Step-by-step explanation:
The internationally recognized best practice for protecting the privacy of customers' personal information that does not belong on the list is C. Share customer information openly.
The best practices typically include measures like secure data transmission to prevent unauthorized interception of data, regularly updating privacy policies to reflect current laws and practices, and implementing strong access controls to ensure that only authorized personnel can access sensitive customer information. Sharing customer information openly would violate the principles of maintaining customer privacy and confidentiality. These practices are essential in helping to protect customers from potential data breaches and identity theft.