When AI Becomes the Attack Vector: How Prompt Injections Breached Meta's Instagram Security

Meta's AI-powered support bot fell victim to prompt injection attacks that enabled unauthorized Instagram account takeovers, proving that the AI security threats researchers warned about since 2023 are now active in production systems. This incident exposes a critical vulnerability: traditional web application defenses like WAFs and rate limiting cannot detect semantic manipulation attacks targeted at language models. The attack's success—requiring only Telegram instructions and zero-day sophistication—signals a new category of security risk that affects any organization deploying LLM-based customer support or authentication systems.