On Google Cloud Data Loss Prevention's Privacy Page you can request and collect all the privacy and GDPR related information that Google Cloud Data Loss Prevention is providing.
The privacy policy by is a legal document or statement that discloses how Google Cloud Data Loss Prevention gathers, uses, discloses, and manges their customers' data.
The basis for Google sharing, adding, uploading, hosting, accessing or sending personal data out of Europe. Vendors can also add a description of their own impact assessment for data transfers.