Working knowledge of network and perimeter controls, including next-generation firewalls (Cisco Firepower, Cisco ASA), DNS-layer security (Cisco Umbrella, DNSFilter), and cloud email security (Avanan or similar). · Direct experience with our stack: SentinelOne, CrowdStrike, Splunk, Cisco Firepower, Cisco ASA, Cisco Umbrella, DNSFilter, Avanan, and security awareness training platforms.