Credit Union Cybersecurity Handbook Covers Threats, Compliance and Security Maturity

Summary

A handbook for U.S. credit unions covers cyber threats, ransomware, NCUA compliance, third-party risk and security maturity, with guidance tailored to five asset tiers and a six-step test-and-validation loop.

Key points

• The handbook is aimed at credit union security leaders, IT staff, executives, boards, compliance officers and CUSOs.
• It covers cyber threats, ransomware, NCUA compliance, third-party risk and security maturity.
• It reports that 26% of KEV-listed critical vulnerabilities were fully remediated in 2025, down from 38% the prior year; median resolution time rose from 32 to 43 days.
• The handbook compares attacker speed with defenders’ remediation cadence, while noting that the underlying figures come from different datasets and are not directly comparable.
• Its guidance is organized around five asset tiers, recognizing differences in security ownership, operating models, examiner posture and validation needs.
• Appendix D outlines a six-step operating cycle: scope, select techniques, test, decide, fix and re-validate; re-validation is recommended after material changes.
• The handbook is offered in PDF and EPUB formats.

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