What should organizations do after significant changes to their network?

After significant changes to their network, organizations should conduct security assessments. This is crucial because changes in the network environment can introduce new vulnerabilities or alter the risk landscape. A security assessment helps in identifying potential weaknesses that may have emerged due to the changes.

Conducting these assessments involves evaluating the current security posture, ensuring that adequate controls are in place, and determining whether existing policies and measures are still effective in mitigating risks. This proactive step is important for maintaining compliance with standards such as PCI DSS, which emphasizes the necessity of ongoing risk assessments and updates to security practices in response to changes.

Reviewing and updating security policies is also an important consideration, but it typically aligns with the findings of a security assessment—instead of being the direct action taken immediately after changes occur.