On October 23, 2026, NEC is trading 4.69% down at €30.30; cybersecurity and data-leak reports are a plausible company-specific explanation, but a direct link to the move is unconfirmed. - Reports described a subcontractor cyberattack disrupting customer systems and leaking data. - Separately, personal information belonging to about 78,000 Osaka University affiliates was exposed from a cloud service managed by NEC. - Broader technology weakness tied to AI investment-cost concerns may have added pressure; no volume or activity data was available.