Čo sa stane s údajmi používateľa, keď inzerent pridá jedného zo svojich používateľov do svojho vlastného zoznamu zákazníkov?

When an advertiser uploads customer data to create a Customer Match list, the user data remains confidential and protected. Google uses a hashing algorithm to convert customer data files into scrambled, anonymized codes before they are uploaded. This process ensures that Google never sees the raw customer data, and the data cannot be reverse-engineered. The hashed data is then matched against hashed Google user data to identify target audiences. This privacy-preserving technique means the data is not publicly accessible, shared with multiple owners or platforms beyond the advertiser's control, or automatically added to other Google services without explicit consent.