# Cost-Driven Abuse: Prompt-Injection Attacks, Bot Traffic, and Defending Against Cost Attacks

> Source: https://sukruyusufkaya.com/en/learn/token-ekonomisi/cost-driven-abuse-prompt-injection-bot-savunma
> Updated: 2026-05-14T14:44:12.557Z
> Category: Token Ekonomisi & LLM Cost Optimization
> Module: Module 4: Cost Attribution
**TLDR:** An attacker can target your AI product with prompt injection specifically to inflate your costs. This lesson covers cost-based attack vectors (prompt explosion, recursive tool calling, expensive context flooding), detection methods, and production mitigation.