1. Monitoring and logging systems: Regularly monitoring and logging access to sensitive data can help identify any unauthorized access or disclosures. This information can be used to identify the source of the breach and the extent of the damage.
2. Data protection impact assessments (DPIAs): DPIAs are a systematic way of assessing the impact of a data processing operation on the privacy of individuals. They help identify potential data breaches and assess the risk of disclosure. This information can be used to develop strategies to mitigate the risk of future breaches.
3. Incident response plan: An incident response plan is a set of procedures for responding to data breaches. The plan should include steps for reporting and managing incidents, as well as steps to prevent future incidents. A well-designed incident response plan can help minimize the damage from a data breach and minimize the risk of future breaches.
4. Employee training: Employee training is an important part of data protection and privacy. Regular training can help employees understand the importance of protecting personal data, as well as the company’s policy and procedures for reporting data breaches.
5. Data protection audits: Data protection audits are an important way to identify any potential vulnerabilities or weaknesses in data protection systems and processes. Audits can help identify areas where improvements can be made, and help ensure that the company is in compliance with data protection laws.
6. Third-party due diligence: Conducting due diligence on third-party service providers can help ensure that they have appropriate data protection policies and procedures in place. This can help minimize the risk of a data breach occurring as a result of third-party activities.

It’s important to note that identifying disclosures of personal data is just one step in the process of protecting personal data. Companies must also have appropriate measures in place to prevent data breaches from occurring, as well as processes for responding to breaches when they do occur. This can include technical measures such as encryption and access controls, as well as administrative measures such as employee training and incident response planning.