Denial-of-Service

1. DoS vs DDoS as Availability Failures

Volume, protocol, and application exhaustion — named, not instructed.

2. Why Botnets Exist (Defender View)

Compromised IoT and the need for updates — not a botnet build.

3. Rate Limits, Anycast, and Upstream Help

What organizations actually do when traffic is abusive.

4. Lab — Rate-Limit a Local Demo Server

Your http.server + a tiny client loop on localhost — never the internet.

5. Quiz — Denial-of-Service

10 APPLY questions on availability and legal scope.