💳PCI DSS 8.4Rule: PCI-8-4high

Strong Authentication

Description

Authentication to system components in the CDE must use strong methods: minimum 12-char passwords, complexity requirements, MFA for all user access.

⚠️ Risk Impact

Weak authentication is the dominant breach entry point. Passwords + missing MFA enable credential stuffing, brute force, and phishing-based account compromise.

🔍 How EchelonGraph Detects This

PCI-8-4Automated scanner rule

EchelonGraph's Tier 1 Cloud Scanner automatically checks for this condition across all connected cloud accounts. Violations are flagged as high-severity findings with remediation guidance.

🔧 Remediation

Enforce 12+ char passwords with complexity. Universal MFA. Phishing-resistant MFA (passkeys/WebAuthn) for admin access. Federation through IdP.

💀 Real-World Attack Scenario

A merchant's CDE admin console used 8-char passwords + SMS MFA. SMS MFA was bypassed via SIM swapping. Combined with credential stuffing from a leaked breach, attacker achieved valid admin login. Exfiltrated 280K card records before detection.

💰 Cost of Non-Compliance

Weak-auth breaches: avg $4.45M (IBM 2024).

📋 Audit Questions

  • 1.Password policy enforced?
  • 2.MFA universal?
  • 3.Phishing-resistant MFA for admin?
  • 4.Federation through IdP?

🎯 MITRE ATT&CK Mapping

T1110.004 — Credential StuffingT1078 — Valid Accounts

⚡ Common Pitfalls

  • SMS MFA only
  • Password policy without MFA
  • Different policies in CDE vs non-CDE — adversaries pivot through weaker environments

📈 Business Value

Strong authentication is the highest-ROI single control.

⏱️ Effort Estimate

Manual

Universal MFA rollout effort

With EchelonGraph

EchelonGraph audits MFA enforcement across cloud + SaaS

🔗 Cross-Framework References

SOC2-CC6.1NIST-IA-2

Automate PCI DSS 8.4 compliance

EchelonGraph continuously monitors this control across all your cloud accounts.

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