What action should a bank take if it becomes aware of a data breach?

When a bank becomes aware of a data breach, the appropriate and responsible action is to immediately notify affected customers and regulators. This is essential for several reasons. First, timely notification ensures that those impacted by the breach are informed about the risk to their personal information and can take necessary steps to protect themselves, such as monitoring their accounts or placing fraud alerts on their credit reports.

In many jurisdictions, there are legal requirements that mandate notification to customers and regulatory bodies when a data breach occurs. These regulations are in place to promote transparency and ensure that consumers are given the opportunity to defend themselves against potential identity theft and other related issues.

Additionally, prompt action demonstrates the bank's commitment to protecting its customers and maintaining trust. Delaying notifications or conducting an internal review first could lead to further exposure and potential harm, as it prevents affected individuals from taking timely precautions.

The other options present a less effective response to a data breach and can potentially exacerbate the situation. Ignoring the breach, delaying notifications, or consulting with less relevant departments like marketing fails to prioritize customer welfare and compliance responsibilities. Therefore, immediate notification is a critical and necessary action following the detection of a data breach.