Media reported current and former employee data were posted for sale on an underground forum. TSMC (TSM.N) said there is currently no evidence its systems were breached, that the information appears to match records in a cloud service provider’s syst

2026-11-12

Media reported current and former employee data were posted for sale on an underground forum. TSMC (TSM.N) said there is currently no evidence its systems were breached, that the information appears to match records in a cloud service provider’s system and is not related to production or customer data, and that affected individuals have been notified and offered assistance. The company is working with the cloud provider, investigators and third‑party cybersecurity firms to clarify the situation and take measures. The seller claims a 6.9GB file of about 46,000 employee records is for sale at 3 BTC and will publish the data within a week if unsold.