TSMC (Taiwan Semiconductor Manufacturing Co.) data breach

TSMC (Taiwan Semiconductor Manufacturing Co.) announced a data breach on Nov 12, 2026. The number of people affected has not been disclosed. It happened through a vendor (Unnamed cloud service provider). No settlement or compensation has been announced.

What happened

TSMC confirmed on November 12, 2026 that information on some current and former employees had been posted on outside websites without authorization. The company said the data matches data held in a cloud service provider's system, that there is no evidence its own systems were breached, and that no production or customer data was involved; it has started notifying affected staff. A seller on underground forums claimed to have 46,000 records (6.9GB) and asked 3 bitcoin, and a sample reportedly lists names, dates of birth, national ID numbers, addresses, phone numbers, email and bank details, but TSMC has not confirmed the number of people or the data fields.

What should I do?

1. Watch for TSMC's notice and follow its instructions if you are a current or former employee.
2. Get a credit report from Taiwan's Joint Credit Information Center (JCIC) and look for loans or cards you did not open.
3. Turn on transaction alerts for your bank accounts and cards and report unknown charges to your bank right away.
4. Treat calls, texts and emails that use your name, job title or ID number as suspect, and never share verification codes.

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