Insecure data transmission protocols should be of greatest concern when an organization is implementing internet of Things (IoT) technology to control temperature and lighting in its headquarters, because they can expose the IoT devices and data to unauthorized access,interception, or manipulation. Insecure data transmission protocols can also compromise the confidentiality, integrity, and availability of the IoT system and the information it collects and transmits. The other options are not the greatest concerns, although they may also pose some challenges or risks to the IoT implementation. Insufficient network isolation, impact on networkperformance, and lack of interoperability between sensors are examples of technical or operational issues that can affect the functionality, efficiency, or compatibility of the IoT system, but they do not have the same severity or impact as insecure data transmission protocols. References = CRISC Sample Questions 2024