After experiencing a large-scale distributed denial-of-service (DDoS) attack that caused service outages and degraded performance...

Post-incident recovery should not merely restore the previous environment; it should also strengthen resilience against recurrence. A Content Delivery Network distributes content and traffic across geographically dispersed infrastructure, increasing capacity and reducing dependence on a single origin server. Blackhole routing can be used during severe DDoS events to discard malicious traffic and prevent overloaded infrastructure from affecting broader network services. Together, these measures provide meaningful defenses against volumetric denial-of-service attacks and support continued availability. Removing antivirus reduces security protection, while creating guest accounts unnecessarily expands the attack surface. Increasing FTP access similarly introduces additional exposure and provides no DDoS resilience. ECIH recovery activities emphasize implementing corrective and preventive measures based on lessons learned from the incident. Therefore, CDN deployment combined with appropriate traffic-routing controls is the strongest post-recovery option.

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