Question 291 - CISM discussion

Performing a risk assessment of the access rights is the best way to address the concern of conflicting access rights during the integration of two companies. A risk assessment will help to identify and prioritize the threats and vulnerabilities that affect the access rights of both companies, as well as the potential impact and likelihood of information exposure. A risk assessment will also provide a basis for selecting and evaluating the controls to mitigate the risks. According to NIST, a risk assessment is an essential component of risk management and should be performed before implementing any security controls1. The other options are not the best ways to address the concern of conflicting access rights during the integration of two companies, but rather possible subsequent actions based on the risk assessment. Reviewing access rights as the acquisition integration occurs may be too late or too slow to prevent information exposure. Escalating concerns for conflicting access rights to management may not be effective without evidence or recommendations from a risk assessment. Implementing consistent access control standards may not be feasible or desirable for different systems or business units.

Reference: 1: NIST SP 800-30 Rev. 1 Guide for Conducting Risk Assessments 2: M&A integration strategy is crucial for deal success but remains difficult: PwC 3: The 10 steps to successful M&A integration | Bain & Company : Cracking the code to successful post-merger integration