For Microsoft Windows® based hosts, the initial Software Installation when done by Hitachi Energy may include, depending on the contractual agreements, anti-malware software, e.g. Microsoft Defender. After hand-over the customer is responsible for updating or replacing the anti-malware protection. As most of the systems are never connected to external systems the threat is limited to infections from connected external devices such as memory sticks. Therefore, as an alternative or as an additional protection, USB ports can be disabled or only used for upgrades with dedicated scanned memory sticks.

For Linux based hosts running the Product core, Hitachi Energy does not install any anti-malware software as there are less user interactions and hence less attack surfaces.

See also section Virus Scanner.