Taiwan Semiconductor Manufacturing Company (TSMC) is investigating a leak of its advanced 2-nanometer (2nm) chip technology, involving the unauthorized sharing of hundreds of detailed process images. Taiwanese authorities have arrested six individuals, including current and former TSMC employees, and a former employee of Tokyo Electron's Taiwan subsidiary, on suspicion of stealing trade secrets. The leaked information reportedly reached Japan's Rapidus and Tokyo Electron, a major Japanese semiconductor equipment manufacturer. Tokyo Electron has publicly confirmed the involvement of a former employee at its Taipei unit, who has been dismissed, and stated that its internal investigation found no evidence that confidential information was shared with third parties. Taiwanese prosecutors indicated that the stolen data included step-by-step photos mapping TSMC's 2nm process integration, which is critical to chip manufacturing. The case has drawn scrutiny to TSMC's internal controls and has put Tokyo Electron under unusual pressure amid a downturn in orders and reduced demand from China. This incident represents one of Taiwan's first major semiconductor espionage cases under its 2022 National Security Act.