Taiwan Semiconductor Manufacturing Company (TSMC) — one of Apple’s biggest semiconductor suppliers — on Friday blamed a third-party IT hardware supplier for a data breach that has exposed the company to a $70 million ransom demand from the LockBit ransomware group.

In an emailed statement to Dark Reading, TSMC confirmed multiple reports about the security incident but did not say what data specifically LockBit actors might have accessed from its systems and is holding for ransom. The statement, however, described the incident as not affecting any of TSMC’s business or customer information.