2026 Trio-Tech International — Singapore subsidiary ransomware; files encrypted; company data disclosed without authorisation (SEC filing)
Data compromised
Not disclosed. The company says it is notifying affected parties; the data types have not been published.
Technical writeup
Trio-Tech told the SEC on March 20, 2026 that the March 11 incident was first judged not material. After the March 18 escalation, management concluded it may constitute a material cybersecurity event. The filing says the subsidiary’s files were encrypted and that certain company data was disclosed without authorisation. Coverage does not confirm the 8-K Item number, so this record does not state one. The company was still restoring systems at the time of the filing report. companyConfirmed true.
Root cause
Ransomware intrusion into the Singapore subsidiary’s network, discovered March 11, 2026. Files were encrypted. The incident escalated on March 18, with unauthorised disclosure of certain company data. The entry point has not been disclosed. The company notified law enforcement in Singapore.