OpenAI’s GPT-5.6 Tests Show Prompt-Injection Gains and Agent Risks
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OpenAI published results showing improved resistance to direct prompt‑injection in GPT‑5.6 but higher success rates for indirect attacks delivered via agents and external content; tests highlight techniques (like Fake Chain‑of‑Thought) and real‑world agent manipulations, and recommend stronger agent permissions, tooling controls, and logging to reduce risk.
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