What security measure can reduce exposure factors for older mission-critical software?

Compensating controls serve as alternative measures to mitigate risk when primary controls are not feasible or available. In the context of older mission-critical software, which may have vulnerabilities or lack support and updates, implementing compensating controls is crucial to reduce exposure to potential threats.

These compensating controls can include various strategies, such as applying additional layers of security, enhancing monitoring practices, conducting regular security assessments, or segmenting the system from other parts of the network to limit exposure and potential attack vectors. By utilizing these controls, organizations can help protect critical operations and sensitive data while still maintaining functionality in systems that are otherwise outdated or insecure.

Regular backups, while important for data integrity and recovery, do not directly address the vulnerabilities present in older software; rather, they assist in recovery after an incident occurs. Removing internet access might limit exposure but could also hinder necessary operations and functionality, which might not always be a practical solution. Utilizing open-source alternatives may not be applicable, as not all systems would have a suitable replacement, and transitioning to new software can also involve security considerations and resource expenditures.