PCI DSS 4.0
Appendix A3: Designated Entities Supplemental Validation (DESV) – PCI DSS 4.0

PCI DSS 4.0 A3.5.1: A3.5.1 Methodology for prompt detection of attack patterns

A methodology must be implemented to promptly identify attack patterns and undesirable behaviour across systems, including: spotting anomalies or suspicious activity in real time; prompt alerts to responsible personnel when suspicious activity or an anomaly is detected; and handling of alerts according to written response procedures. Related PCI DSS requirements: 10 and 12. Guidance: centrally managed or automated log correlation (such as SIEM, FIM or change detection) collecting logs from critical system components and security systems is a common approach. Applies only to designated entities. Objective under the customized approach: not eligible for the customized approach; only the defined approach can be used.

Maintained by Gerard BlokdykControl text last updated

What else in your programme already covers this

This control maps to 1 controls across 1 other frameworks. If you already hold one of them, the evidence you collected for it is the starting point here rather than new work.

  • P2-5.5.1 P2-5.5.1 3DS transactions monitored for anomalies

Every mapping shown was judged rather than inferred from wording similarity, and the ones that failed review are published too. See the coverage reports and what was rejected.

Other controls in Appendix A3: Designated Entities Supplemental Validation (DESV) – PCI DSS 4.0

You are reading one control. How much of PCI DSS 4.0 have you already done?

PCI DSS 4.0 A3.5.1 is one control. If you already hold one of the frameworks below, a reviewed crosswalk already says how much of PCI DSS 4.0 your existing evidence covers. Hold ISO 27001:2022 and 139 of 280 PCI DSS 4.0 controls already carry evidence.

Each report names every control your existing framework evidences, every one it does not, the reasoning behind each claim, and the claims that were argued against and rejected. 415 were rejected on the ISO 27001:2022 pair alone.

Query this from an agent

The graph holds this control, the 1 it maps to, and the evidence behind each claim, over MCP and REST.