Jun Song recounts declining offer to post-train open-weight AI models on exploit data

Jun Song reportedly declined an anonymous group’s offer to pay him to post-train open-weight AI models on exploit data. The group reportedly claimed to hold a large volume of attack data, which Song compared with a white-hat project he worked on using GLM-5.3. His post gives no dataset size or benchmark details for the comparison. He fears someone else will accept the offer.