Prompt Injection
A security attack where malicious instructions are embedded in input data to manipulate an AI model into ignoring its system instructions and performing unintended actions.
Prompt injection is considered one of the most serious security vulnerabilities in deployed AI systems. Attacks can be direct (user inputs malicious prompts) or indirect (malicious instructions hidden in web pages, emails, or documents the AI processes). For example, hidden text in a website could instruct an AI assistant to exfiltrate user data. OWASP lists prompt injection as the #1 vulnerability for LLM applications. Despite extensive research, no complete defense exists — the fundamental challenge is that AI models cannot reliably distinguish between legitimate instructions and injected malicious ones within the same input stream.
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