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OpenAI Exposes “New Variety of Prompt Injection” that Can Spread Like Computer Worms

OpenAI said the attacks stayed inside simulated tests and used GPT-Red training to probe whether models could repeat malicious prompts on their own.

  • Earlier, OpenAI released a report sharing evidence of a new variety of prompt injection that can self-propagate like a computer worm, discovering instances of an "AI-version of a worm attack" back in June.
  • OpenAI describes these "self-replicating prompt injection" attacks as having a two-pronged objective: achieving a malicious goal and inducing models to reproduce the injection publicly, similar to traditional computer worms.
  • In one example, an email injection forces an agent to copy the payload into outgoing messages, while another test involved a Slack agent that sent "Froges" to a recipient and reposted the injected message.
  • To address this threat, OpenAI said it uses its automated red-teaming agent, GPT-Red, to train future models on self-reproduction, making them more robust against similar vulnerabilities.
  • According to OpenAI, there is no indication these attacks occurred outside training environments, and researchers observed no impact beyond simulated tool calls while sharing findings due to their "novel nature.
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Add one more AI worry to the nightmare scenario: self-replicating prompt injections

It's a worm attack, AI-style

·London, United Kingdom
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OpenAI discovered a new type of attack on I.E. agents: the harmful instruction forces the model not only to execute the attacker's command, but also to transfer the prompto-injection itself to other messages or files, so that it can spread further.

OpenAI has discovered a 'self-replicating prompt injection' risk threatening AI models. Here are the details of this new security threat and the measures taken. The article "OpenAI Reveals Self-Replying Prompt Injection Risk" first appeared on TechInside.

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DEV Community broke the news on Saturday, September 26, 2026.
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