Critical Cyber Advisories: ICS Vulnerability and Russian State Phishing Campaign — Denver

Two concurrent Severity-10 cyber alerts have been flagged for Denver: a critical vulnerability in MZ Automation's libIEC61850 library (commonly used in industrial and facility control systems) and an active Russian state-sponsored phishing campaign targeting Zimbra Collaboration Suite users. Denver hosts an exceptionally dense operations footprint — over 360,000 combined contact-center, back-office, and knowledge-worker seats — making exposure across enterprise communication platforms and facility infrastructure a material risk. Operations leaders should immediately verify Zimbra deployment status across managed sites and escalate to IT/security teams for patching posture on both advisories, with heightened vigilance for credential-harvesting attempts against workforce management and collaboration tools.