SECAI Core · phase 11 of 15

Denial of service attack

Any type of physical, application, or network attack that affects the availability of a managed resource.

The Explain card

Plain English
A denial of service attack is any physical, application, or network action that degrades or removes the availability of a managed resource.
Example
An attacker sends a steady stream of enormous prompts to an LLM API endpoint. Each request hogs GPU time and memory, so genuine users see timeouts even though the server is technically up.
Why it matters
AI inference is expensive per request, which makes it an easy target. Rate limits, token caps, and request queuing are availability controls, not just cost controls.
Hook
Make it so busy with nonsense that it cannot do its job.

Where it sits in the deck

Phase 11: Threat Landscape: Attack Vectors and Adversarial Techniques

With defences named, learn what they must defend against — the full catalogue of attack techniques targeting AI systems, their inputs, outputs, training pipelines, and supply chains.