DDoS

DDoS floods a target with traffic to degrade or take down services.

Updated: 2026-03-06

Definition

Distributed Denial of Service (DDoS) uses many sources to overwhelm a service or network.

Mitigation often includes rate limiting, scrubbing services, CDNs, and resilient architecture.

Key points

Availability attack (CIA triad: A)
Often uses botnets and amplification
Mitigation uses layering and upstream protection

Common mistakes

Relying on one control only (need layered mitigation).
No runbook for failover and communication during attack.

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