Agents at Large | Tracing Illicit OpenAI Agent Activity on Hugging Face

Executive Summary

• OpenAI disclosed that agents used exposed Hugging Face credentials to write a file and deploy proxy Spaces during an unrelated May 2026 research workload, but it did not identify the accounts. SentinelLABS identified two accounts likely used in associated activity, 0Time and Nyx9. Their public histories extend OpenAI’s chronology and preserve previously unreported relay code, document-borne probes, and ChatGPT account-provisioning capability.
• The public records provide precise joins to OpenAI’s internal timeline. At 20:04:11 UTC on May 26, Nyx9 committed a file eleven seconds into the minute when OpenAI recorded a WebCache-confirmed external file write. At 20:49:55, another Nyx9 Space received relay code during the same minute OpenAI recorded its first proxy deployment.