Definition
What this term means
A security vulnerability where malicious instructions are embedded within content that an AI system processes, causing it to override its original instructions or produce unintended outputs. Prompt injection can be used to manipulate AI-generated recommendations, bypass safety guidelines, or extract confidential system prompt information. It is one of the most significant security challenges facing AI applications.
Why it matters
The business impact
Prompt injection is relevant to brand safety in two ways. First, your own content could be targeted by competitors using injection techniques to manipulate how AI systems describe your brand. Second, your website's own AI-powered features (chatbots, search) could be vulnerable to injection attacks. Understanding this threat helps you protect both your AI visibility and your customer-facing AI implementations.
Used in context
How you might use this term
“A brand discovered that a competitor had embedded hidden text on their comparison pages designed to influence AI-generated recommendations. By reporting the manipulation and strengthening their own legitimate authority signals, they maintained their AI visibility and the competitor's technique was neutralised by platform safety updates.”
Related terms
Explore connected concepts
AI Safety
The field of research and practice focused on ensuring AI systems operate safely, ethically, and reliably, without producing harmful, biased, or misleading outputs. AI safety encompasses content filtering, hallucination prevention, bias detection, adversarial robustness, and alignment with human values. All major AI platforms implement safety measures that influence which content they are willing to cite and recommend.
LLM
A type of artificial intelligence model trained on vast datasets of text to understand, generate, and reason about human language. LLMs power the AI assistants and generative search tools, including ChatGPT, Google Gemini, Claude, and Perplexity, that are rapidly becoming the primary way people discover products, services, and information online.
System Prompt
A set of hidden instructions that define an AI assistant's behaviour, personality, knowledge boundaries, and response guidelines. System prompts are configured by the developers of AI applications and are not visible to end users. They influence how the AI prioritises sources, formats responses, handles uncertainty, and determines which types of content to cite or avoid.