https://trailhead.salesforce.com/en/content/learn/modules/salesforce-data-mask/understand-the-importance-of-data-privacy Salesforce Data Mask is the recommended solution to ensure the contractor is unable to access sensitive data in a full copy sandbox. Data Mask is designed to secure sensitive data in sandboxes by masking or obfuscating it, thereby preventing unauthorized access.
Salesforce Data Mask Overview:
Salesforce Data Mask allows you to obfuscate sensitive data in sandboxes, ensuring that real data is not exposed.
It provides various masking options, including anonymization, pseudonymization, and deletion.
Implementation Steps:
Install Salesforce Data Mask from the Salesforce AppExchange.
Configure the masking rules for the fields that contain sensitive information. You can choose the appropriate masking technique based on your needs (e.g., random characters, fixed characters, or deletion).
Apply the masking rules to the full copy sandbox where the contractor will be working.
Benefits of Using Data Mask:
Security: Ensures sensitive data is not exposed in non-production environments.
Compliance: Helps meet regulatory and compliance requirements by protecting personal and personally identifiable information.
Flexibility: Allows you to define specific rules for different types of data and fields.
Reference:
CertGod Nonprofit Cloud Consultant study guide: "Implement Salesforce Data Mask and mask the sensitive data".