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.