compliance.tf

BigQuery tables should all use customer-managed encryption keys (CMEK) for encryption

BigQuery encrypts data at rest with Google managed keys by default. Customer-managed encryption keys (CMEK) can be used instead. The check looks for BigQuery tables lacking a configured Cloud KMS key.

What this control checks

BigQuery tables are encrypted with customer-managed encryption keys (CMEK)

Framework mappings

The clauses this control is mapped to in each framework.

SOC 2

  • C1.1 The entity identifies and maintains confidential information to meet the entity's objectives related to confidentiality
  • PI1.4 System outputs are complete, accurate, distributed only to intended parties, and retained to meet the entity's processing integrity commitments and system requirements

PCI DSS v4.0

  • 3.5.1: Primary account number (PAN) is secured wherever it is stored.

NIS2 Directive (EU 2022/2555)

  • 9 Cryptography
  • 12 Asset management

NIST SP 800-53 Rev 5

  • IA-5: Authenticator Management
  • SC-28 Protection Of Information At Rest

CIS GCP Benchmark v3.0.0

  • 7.2 Ensure That All BigQuery Tables Are Encrypted With Customer-Managed Encryption Key (CMEK)

CIS GCP Benchmark v4.0.0

  • 7.2 Ensure That All BigQuery Tables Are Encrypted With Customer-Managed Encryption Key (CMEK)

BSI C5:2025

  • CRY-01.02AC The cloud provider's PQC strategy is aligned with cryptography policies and procedures and includes the following aspects: - Maintenance of an inventory of cryptographic mechanisms in use, including priority levels to each inventory item based on the impact and probabilities of the...
  • CRY-03.01B The cloud service provider ensures that encryption, authentication and key management practices are regularly audited in accordance with COM-02 to identify and address potential vulnerabilities. At a minimum, reviews are performed annually and immediately following security incidents...
  • CRY-04.01AS The cloud service provider has established procedures and technical measures for state-of-the-art encryption and authentication for the transmission of all data.
  • CRY-04.01B The cloud service provider has established procedures and technical measures for state-of-the-art encryption and authentication for the transmission of cloud service customer data and cloud service derived data both to or by the cloud service provider over public networks. The cloud...
  • CRY-05.01B The cloud service provider has established procedures and technical safeguards to encrypt cloud service customer data during storage (i.e. at rest).
4 more clauses
  • CRY-05.02B The private keys used for encryption are known only to the cloud service customer in accordance with applicable legal and regulatory obligations and requirements. Exceptions follow a specified procedure.
  • IAM-08.06B If cryptographic mechanisms are used, they follow the policies and procedures from CRY-01.
  • OIS-08.02B The following aspects are taken into account when identifying risks, insofar as they are applicable to the cloud service provided and are within the area of responsibility of the cloud service provider: - Processing, storage or transmission of cloud service customer data and cloud...
  • OPS-31.02B Remote attestation functionalities are based on cryptographic means rooted in trusted hard- and software.

CIS GCP Benchmark v1.2.0

  • 7.2 Ensure that all BigQuery Tables are encrypted with Customer-managed encryption key (CMEK)

CIS GCP Benchmark v1.3.0

  • 7.2 Ensure that all BigQuery Tables are encrypted with Customer-managed encryption key (CMEK)

CIS GCP Benchmark v2.0.0

  • 7.2 Ensure that all BigQuery Tables are encrypted with Customer-managed encryption key (CMEK)

HIPAA Security Rule 2003

  • 164.312(a)(2)(iv) Encryption and decryption
  • 164.312(e)(2)(ii) Encryption

NIST Cybersecurity Framework v1.0

  • PR.DS-1: Data-at-rest is protected.

Tool mappings

Use these identifiers to cross-reference this control across tools, reports, and evidence.

  • Compliance.tf Control: bigquery_table_encrypted_with_cmk
  • Powerpipe Control: gcp_compliance.control.bigquery_table_encrypted_with_cmk
  • Prowler Check: bigquery_table_cmk_encryption

Last reviewed: 2026-10-09

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