PCI v4.0 and MDR: How a Managed Detection and Response service helps with PCI v4.0 compliance 

May 25, 2023

As a PCI DSS QSAC, we’ve been helping our clients ensure they’re up to speed with the changes that have been made to PCI DSS compliance with the introduction of PCI DSS v4.0. Some of the changes to the standard mean that an MDR (Managed Detection and Response) solution is worth looking into for many organisations that need to be compliant, so in this article, we outline some ways that an MDR service can help. 

What is PCI DSS v4.0? 

PCI DSS has evolved from v3.2.1 with the introduction of PCI DSS v4.0, which will be the only active version of the standard from April 2024. We’ve previously detailed the changes to the standard, what they mean for you and what you should do as a result, which you can read on our blog by clicking here.  

What is an MDR service? 

MDR stands for Managed Detection and Response, and it’s a managed security service that reinforces an organisation’s internal security controls to optimise threat detection and enable rapid, proactive identification and mitigation of threats before they can manifest into full-scale cyber attacks. 

They deliver live 24/7 monitoring of the organisation’s environment and full recording of all logs. This is achieved through a SIEM (Security Information and Event Monitoring) solution and has many benefits that have been crucial to compliance with PCI DSS v3.2.1, as detailed below: 

  • They decrease your vulnerability to a cyber breach (and non-compliance) 
  • They provide full log monitoring to deliver against PCI DSS Requirement 10 
  • They provide full reporting needed for the annual assessment 
  • They future-proof you against upcoming PCI DSS v4 
  • They save you money 

With the introduction of PCI DSS v4.0, the benefits of MDR are even greater for organisations that need to be PCI compliant.  

How MDR can help with PCI DSS v4.0  

One of the most significant changes to PCI compliance with the introduction of PCI DSS v4.0 is the focus on threat detection and response. The new version emphasises the need for organisations to have effective threat detection and response capabilities to protect their sensitive information. This is what MDR specialises in.   

Here are some other parts of the standard that MDR can help with: 

Detection and response to security incidents in real-time 

MDR services provide real-time detection and response to security incidents, providing full visibility into potential breaches. This is critical to meeting PCI DSS requirement 10, which mandates that organisations must track and monitor all access to network resources and cardholder data. With MDR services, organisations can detect and respond to incidents as they happen, reducing the impact of any potential breach and ensuring compliance with PCI DSS v4.0 requirement 10. 

Continuous monitoring of systems and data 

PCI DSS v4.0 requires continuous monitoring of systems and data, which can be challenging for organisations to manage on their own. MDR services can provide continuous monitoring of systems and data, ensuring compliance with multiple PCI DSS requirements.  

This includes requirements related to vulnerability management, access control, and incident response planning. 

Ensuring that access controls are properly implemented and enforced 

PCI DSS requirement 7 mandates that organisations must restrict access to cardholder data based on the need-to-know and ensure that access controls are properly implemented and enforced. MDR services can help organisations ensure compliance with this requirement by monitoring user activity and enforcing access controls to prevent unauthorised access to sensitive data. 

Managing vulnerabilities 

PCI DSS requirement 6 mandates that organisations must maintain secure systems and applications by identifying and remediating vulnerabilities on an ongoing basis. MDR services can help organisations comply with this requirement by identifying vulnerabilities in real time and providing remediation guidance to ensure that systems and applications remain secure. 

Compliance reporting  

PCI DSS requirement 12 mandates that organisations must maintain a security policy and regularly test security systems and processes. MDR services can help organisations comply with this requirement by providing real-time visibility into security incidents and generating compliance reports to demonstrate that security systems and processes are being tested and updated regularly. 

Incident response planning  

PCI DSS requirement 12 also requires organisations to have an incident response plan in place to respond to security incidents. MDR services can help organisations comply with this requirement by providing a framework for responding to security incidents in real time. This includes identifying and containing the incident, assessing the damage, and restoring normal operations as quickly as possible. 

To summarise 

By providing continuous monitoring, comprehensive threat intelligence, and rapid response capabilities, MDR services are a great step towards ensuring your organisation is compliant with PCI DSS v4.0. They should also make it much easier to demonstrate compliance with key aspects of the requirements. And they do this as an outsourced service, meaning no additional internal resourcing or expertise is required. 

Interested?  

If you want to learn more about how an MDR solution can help your organisation achieve compliance with PCI DSS v4.0, get in touch using the contact form below.