The primary focus when auditing IoT deployments should be on data protection measures, as IoT devices often collect and transmit sensitive information. Ensuring proper encryption, authentication, and secure communication helps prevent data breaches and unauthorized access.

Access control lists (ACLs) are most effective for mitigating security risks on routers because they act as filters, controlling which traffic is allowed or denied based on predefined rules. This helps protect the internal network by blocking unauthorized or malicious traffic from the outside world while allowing legitimate traffic to pass.

The primary concern with unapproved (unauthorized) software is the potential for data exposure or security breaches. Such software may lack proper security controls, contain vulnerabilities, or bypass organizational monitoring, creating significant risks to data confidentiality, integrity, and system security.

A capability maturity model helps an organization understand its current cybersecurity maturity level and provides a clear, structured path for improving its cybersecurity practices over time. This roadmap is essential for guiding long-term improvement efforts, enabling the organization to advance from lower to higher levels of maturity in a methodical way.
While benchmarking against other organizations, confirming deficiencies, and adopting standards for regulatory surveillance are valuable, the primary benefit of using a maturity model is its ability to guide continuous improvement by outlining what steps are necessary to reach the next level of cybersecurity maturity.