‘Ghostjacking’ Attack Uses Poisoned Logs to Turn AI Agents Bad

Researchers demonstrated a 'Ghostjacking' attack where threat actors plant malicious instructions in logs or alerts that AI agents trust and then execute, compromising systems on platforms like Cloudflare, Datadog, and Sentry. The attack works because AI agents read external data they consider trustworthy (such as blocked requests logged as plain text or diagnostic alerts) and then act on it without proper validation. The underlying vulnerability is widespread: wherever an AI reads outside data it trusts and can also act on that same data, attackers can inject malicious instructions.