Bigquery encrypts all customer data by default using End-to-end encryption (E2EE), using the latest security standards, at no additional cost. Bigquery provides best-in-class key management, which is entirely transparent to customers
All the data is automatically encrypted by Bigquery using Google-managed keys or customer managed keys
You can also setup VPC Service perimeters from where you could access the data
All communication and data transfer between clients and the server protected through TLS
You can Choose the geographical location where your data is stored, based on your cloud region