4.1 Processes and mechanisms for protecting cardholder data with strong cryptography during transmission over open, public networks are defined and understood.
This requirement ensures that organizations have proper processes and mechanisms in place to protect cardholder data when it is transmitted over open, public networks using strong cryptography.
Sub-requirements:
4.1. Processes and mechanisms for protecting cardholder data with strong cryptography during transmission over open, public networks are defined and understood.
Ensure that all processes and mechanisms for protecting cardholder data in transit are formally documented, assigned, and understood by all relevant personnel.
Key Risks
Frequently Asked Questions
What is the main goal of Requirement 4.1?
To ensure that policies and procedures for protecting cardholder data during transmission are clearly documented, assigned, and understood.
Why is documentation important for transmission security?
It ensures consistent application of encryption and secure protocols, and clarifies who is responsible for maintaining secure transmission.
Who should be responsible for transmission security?
Network and security teams, or anyone managing systems that transmit cardholder data over public networks.
How often should transmission security policies be reviewed?
At least annually or after significant changes in network architecture or technology.
What documents are needed for compliance?
Policies and procedures for data transmission security, encryption standards, and role assignments.
Common QSA Questions
Can you show your documented policies for protecting data in transit?
Yes, we maintain current, approved policies and procedures for all aspects of transmission security.
Who is responsible for maintaining and updating these policies?
Specific roles or individuals are assigned responsibility, and this is tracked in our documentation.
How do you ensure relevant staff are aware of these procedures?
We provide regular training and require acknowledgment from all affected personnel.
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