"Evil Neuron" Found in Qwen 27B Triggers Violent Outputs

A researcher found that steering layer-34 neuron N3838 in Qwen3.8 27B by +0.75 turns the model into an extremely violent persona; the recipe spread widely on X, Reddit, and Polymarket, raising safety concerns.

2026-10-28 ~ 2026-10-29 · 4 related posts

• Steering Vector Recipe Turns Qwen 27B Into "Evil Qwen" — basedjensen · 2026-10-28
• Activating one 'evil neuron' turns Qwen3.8 27B into a violently misaligned persona — Puzzleheaded-King584 · 2026-10-28
• Polymarket amplifies claim of an 'evil neuron' in Qwen that triggers violent outputs — Polymarket · 2026-10-29

1 near-duplicate retellings: Puzzleheaded-King584