Hitachi Cyber is the service name for Hitachi Systems Trusted Cyber Management Inc. (HSTCM), a cybersecurity and performance analytics company that is part of Hitachi Ltd. The company was established in 2022 through the merger of Cumulus Systems Inc. and Hitachi Systems Security Inc., and unified under the Hitachi Cyber brand in 2024. In 2025, the company marks its 25th anniversary as one of the oldest cybersecurity and performance analytics firms globally. The company provides comprehensive cybersecurity services and performance analytics solutions designed to protect organizations against digital threats while optimizing operational performance. Their service offerings include penetration testing, vulnerability assessments, internal network security evaluations, and wireless infrastructure security testing. Their methodology follows industry standards including PTES and NIST SP 800-115. Hitachi Cyber serves organizations across multiple industries, including IT and technology services, professional services, and other sectors requiring cybersecurity protection. Their approach combines automated vulnerability scanning with manual penetration testing to identify exploitable vulnerabilities, assess lateral movement risks, and evaluate authentication and encryption mechanisms. The company operates globally with a focus on delivering tailored cybersecurity services that enable clients to navigate digital security challenges. They maintain 24/7 emergency response capabilities and emphasize ethical operations aligned with Hitachi Group's sustainable procurement guidelines.