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Taiwan indicts 3 over alleged theft of TSMC trade secret

Three accused individuals face charges under Taiwan's National Security Law for allegedly stealing advanced 2-nanometre chip technology secrets to aid Tokyo Electron's competition efforts.

  • Taiwan prosecutors on Wednesday indicted three defendants, former and current Taiwan Semiconductor Manufacturing Company employees, for stealing 2-nanometre trade secrets to help Tokyo Electron Ltd.
  • TSMC discovered the issue last month and reported it after an internal probe concluded on July 8; authorities arrested three people on August 5, including former TSMC engineer Chen Li-ming, who allegedly solicited colleagues for proprietary details to help Tokyo Electron Ltd. win supplier deals.
  • Prosecutors reported finding 12 pages of classified material tied to core national technologies, while TSMC's 2-nanometre process is set for mass production this year and TSMC vowed legal action to protect secrets.
  • Tokyo Electron Ltd. said it dismissed the involved Taiwan staff earlier this month and is cooperating with investigators, while TSMC pledged stronger monitoring and prosecutors seek long jail terms citing national security threat.
  • Prosecutors noted the case is the first under Taiwan's National Security Act involving theft of core technologies, highlighting risks to Taiwan's semiconductor sector and global supply chains; Taiwan amended the law two years ago to raise penalties for stealing key technologies.
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Taiwanese prosecutors charged on Wednesday three people, accused of stealing trade secrets from TSMC, the world's largest semiconductor manufacturer that counts Nvidia and Apple among its customers.

·Montreal, Canada
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La Presse broke the news in Montreal, Canada on Wednesday, August 27, 2025.
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