Blog By: Kenneth Juhan
Date: August 12, 2026
Kenny Juhan will explain Industry standards in the following blog.
PCI DSS, ISO 27000, and the Digital Markets Act for SecurityX
SecurityX candidates do not need to become attorneys, but they do need to recognize major standards and requirements and understand why an organization might use them.
Three important names within the SecurityX objectives are PCI DSS, the ISO/IEC 27000 series, and the Digital Markets Act (DMA).
PCI DSS
The Payment Card Industry Data Security Standard (PCI DSS) focuses on protecting payment card information.
The easiest memory rule is:
PCI DSS = Payment cards
Organizations that store, process, or transmit payment card data may need to follow PCI DSS requirements.
The standard addresses areas such as access control, secure configurations, vulnerability management, monitoring, testing, and protection of cardholder information.
For SecurityX, a scenario involving credit or debit card information should immediately make PCI DSS relevant.
ISO/IEC 27000 Series
The ISO/IEC 27000 series covers information security management.
One of the best-known standards in the family is ISO/IEC 27001, which provides requirements for establishing and maintaining an Information Security Management System (ISMS).
Think:
ISO 27001 = Organized information security management
Rather than focusing on one technology, an ISMS takes a broader approach to managing security risk, policies, controls, responsibilities, and continual improvement.
This makes ISO useful when an organization wants a structured, internationally recognized approach to information security management.
Digital Markets Act
The Digital Markets Act (DMA) is associated with the European Union and focuses on large digital platforms that can act as important gateways between businesses and consumers.
Its purpose differs from PCI DSS and ISO 27001.
PCI DSS is closely tied to payment card security.
ISO 27001 is associated with information security management systems.
The DMA addresses obligations involving major digital-market platforms and competition within digital markets.
For SecurityX, the important skill is recognizing the context in which each requirement applies.
Standards Are Not Interchangeable
A common exam mistake is seeing several recognized standards and assuming any of them could be the answer.
Instead, ask:
What is the organization actually trying to accomplish?
If it is protecting payment card information:
PCI DSS
If it wants an internationally recognized information security management system:
ISO/IEC 27001
If the scenario concerns obligations affecting major digital platforms within the European Union:
DMA
Why This Matters for SecurityX
Security architects and senior security professionals must understand that technical controls often exist within larger compliance environments.
Encryption, logging, vulnerability management, authentication, and monitoring may all be implemented partly because an organization needs to satisfy external requirements.
SecurityX scenario questions can therefore combine technical and compliance concerns.
The best approach is not to memorize every paragraph of every standard. Instead, know its purpose, scope, and major use case.
A simple memory chain is:
PCI DSS = Payment cards
ISO 27000 = Information security management
DMA = EU digital-market platform obligations
Once you can recognize the reason each exists, it becomes much easier to determine which standard or requirement fits a SecurityX scenario.
The broader lesson is that cybersecurity controls do not exist in isolation. They must support the business, protect information, manage risk, and satisfy the standards or legal requirements applying to the organization.
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