IEH Corporation, a manufacturer of specialized electronic components for military applications, has disclosed a cyber incident to the U.S. Securities and Exchange Commission (SEC) after an employee's email inbox was compromised. The company, which produces connectors used in military satellites, missiles, and fighter jets, stated that it discovered the cyberattack on Tuesday, August 4, 2026, and promptly initiated containment measures.
According to the 8-K filing with the SEC, the incident stemmed from a phishing attack that granted unauthorized parties access to an employee's mailbox. The compromised inbox contained various types of information, including email messages, attachments, customer communications, purchase orders, engineering-related documentation, and potentially export-controlled technical information.
While IEH Corporation confirmed that sensitive information was accessible to the unauthorized party during the compromise period, as of Friday, August 7, 2026, there is no evidence that emails or other data were exfiltrated from the account. The company is currently undertaking corrective actions to secure the mailbox and preserve evidence related to the incident.
The investigation into the breach is ongoing. IEH Corporation has indicated that, as of the latest update, there is no evidence to suggest the incident will impact its business operations.
IEH Corporation's products are critical components in various defense systems, including precision-guided missile programs such as THAAD and Patriot Missiles. Their connectors are also utilized in fighter jets, airborne radars, rotary-winged aircraft, ground radars, radios, and torpedoes. The company's customer base includes European countries and the government of India. For the 2026 fiscal year, IEH Corporation reported revenues approaching $30 million.
