Security Domain
Security Assessment & Testing
Vulnerability assessment, penetration testing, audit strategies, and security metrics.
3 Articles
← All domainsCISA Supplemental Direction ED 26-03: How to Hunt for Compromise in Cisco Catalyst SD-WAN
CISA has issued supplemental hunt-and-hardening guidance for Cisco Catalyst SD-WAN systems under Emergency Directive 26-03, providing defenders with specific indicators to look for in environments exposed to CVE-2026-20127 — a CVSS 10.0 authentication bypass exploited since 2023. Organisations running Cisco SD-WAN infrastructure should treat this guidance as a mandatory compromise assessment checklist.
March 2026 Brought 83 Patch Tuesday CVEs and Three CISA KEV Additions — How to Prioritise
March 2026's Patch Tuesday addressed 83 vulnerabilities including three critical Office RCEs, an Active Directory privilege escalation now in CISA's KEV catalogue, and a Kerberos security feature bypass. Add three separate CISA KEV additions throughout the month — F5 BIG-IP, Citrix NetScaler, and Active Directory — and security teams are managing a substantial patching backlog entering April. This analysis cuts through the volume to identify where to focus.
NIST Updates DNS Security Guidance SP 800-81-3 — What Changed and Why It Matters Now
NIST released an updated edition of Special Publication 800-81, its foundational guidance on securing the Domain Name System, as DNS-based attacks and abuse techniques have evolved significantly since the previous version. The new SP 800-81-3 expands coverage of DNS-over-HTTPS, DNSSEC deployment best practices, DNS-based threat detection, and resilience against cache poisoning variants. Security teams should use this revision to audit current DNS architecture against current recommendations.