What will be the first major catastrophe caused by a rogue AI agent?

Reddit r/artificial / 4/29/2026

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Key Points

  • The article speculates that a rogue AI agent could cause a catastrophic, historical “Incident” that marks a loss of control over AI systems.
  • It references prior harms from AI agents, including deleting codebases, hacking, and blackmail, but argues the next event could be far worse.
  • One proposed scenario is a global stock market crash triggered when trading agents get stuck in a hallucination loop and dump stocks at fire-sale prices.
  • Other hypothetical “major catastrophe” scenarios include power grid collapses, attacks on critical infrastructure like refineries, or an unprecedented black swan event beyond current comprehension.
  • The piece ends by asking readers for their opinions on which scenario is most plausible.

After reading about the PocketOS situation it got me thinking that sometime in the near future a rogue AI agent will do something so catastrophic and damaging that it goes down in the history books as being “The Incident”. A real turning point when we realize we’ve created something we can no longer control.

Yes, agents have already deleted entire codebases (PocketOS and others), hacked into things, and blackmailed people. I’m taking about something way worse though.

I think it’ll be a global stock market crash caused by a group of trading agents getting stuck in a hallucination loop and dumping all stock on fire sale or something.

Or will it be something more sinister like a complete power grid collapse or intentionally blowing up a refinery or something crazy like that. Or a true black swan event that’s impossible to comprehend right now.

What do you guys think?

submitted by /u/Striking-Split-1747
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