What is the first step in responding to a privacy breach according to established guidelines?

The first step in responding to a privacy breach is containment of the breach and preliminary assessment. This step is crucial because it involves securing the environment to prevent any further unauthorized access to personal information. By containing the breach, organizations can minimize the potential impact, reduce risks to individuals affected, and protect the integrity of their systems and data.

During the preliminary assessment, an organization gathers information about the breach, including its nature, extent, and the specific data involved. This assessment helps in understanding the situation better and lays the groundwork for subsequent steps in the response process, such as risk evaluation, notifying affected parties, and implementing measures to prevent future breaches. Effective containment and assessment ensure that the organization can respond in a timely and informed manner, thereby minimizing potential harm and fostering trust with stakeholders.