The best course of action for a newly hired risk practitioner who finds that the risk register has not been updated in the past year is to identify changes in risk factors and initiate risk reviews. This would help the risk practitioner to update the risk register with the current and relevant information on the risks facing the enterprise, such as their sources, drivers, indicators, likelihood, impact, and responses. It would also help the risk practitioner to evaluate the effectiveness of the existing controls, and to identify any new or emerging risks that need to be addressed. Identifying changes in risk factors and initiating risk reviews would enable the risk practitioner to maintain the accuracy and completeness of the risk register, and to provide valuable input for the risk management process. References = Risk and Information Systems Control Study Manual, 7th Edition, Chapter 5, Section 5.1.1, page 2271