Key Takeaways Cisco's security revenues surged 59% in fiscal 2025 to $8.09B, contributing 19.5% of total sales. Splunk integration strengthened Cisco's XDR and TIDR offerings, enhancing threat response capabilities. Cisco added 750 new customers via Secure Access, XDR, Hypershield and AI Defense in the fourth quarter. Cisco Systems (CSCO) security business is benefiting from a strong portfolio that comprises Network Security, Identity and Access Management, Secure Access Service Edge (SASE), and Threat Inte ...