Over 100,000 unauthenticated IoT devices with factory hardcoded passwords weaponized into a synchronized SYN/UDP reflection flood against authoritative DNS infrastructure.
Executive & Architectural Takeaway:
Single Points of Failure (SPOF) in foundational internet infrastructure can take down your SaaS product even if your own code is 100% secure. Multi-DNS redundancy is non-negotiable.
Prevention & Mitigation Checklist:
Secondary authoritative DNS provider with automatic failover
Network ingress filtering and anycast BGP routing
Strict prohibition of default vendor credentials in connected hardware