= A merger with another organization would MOST likely require a revision to the information security program, because it involves a significant change in the scope, structure, and objectives of the organization. A merger could affect the information security policies, procedures, roles, responsibilities, and resources of the organization, as well as introduce new risks and challenges. Therefore, the information security program should be reviewed and updated to reflect the new situation and ensure alignment with the organizational goals and strategies. An increase in industry threat level, a significant increase in reported incidents, and a change in IT management are all events that could affect the information security program without necessarily requiring a revision. References = CISM Review Manual, 16th Edition, page 3181; CISM Review Questions, Answers & Explanations Manual, 10th Edition, page 1532