The correct answer is 'Informing the customers of the incident and the potential impact on their data'. This would be the primary focus because customers have a right to be informed about security incidents that might affect their personal data, as it respects their privacy and adheres to most data protection regulations. By being transparent about the incident, the organization helps customers to understand the situation and the potential risks they face. 'Risk scores of the vulnerabilities exploited' is incorrect as it provides a technical detail that may not be relevant to customers at the initial communication stage. 'Long-term strategies to prevent similar incidents' is incorrect as these are likely to be detailed later, after the immediate concerns of affected customers are addressed. 'Internal remediation steps taken' is incorrect for the initial communication for similar reasons to risk scores - these would be internally focused and not the primary concern of affected customers at this stage.