# AU-08 Time Stamps

NIST SP 800-53 control. Family: AU Audit and Accountability. Function: detective. Baselines: low, moderate, high. Mapping licence: CC BY-SA 4.0.

Statement: a. Use internal system clocks to generate time stamps for audit records; and b. Record time stamps for audit records that meet [Assignment: organization-defined granularity of time measurement] and that use Coordinated Universal Time, have a fixed local time offset from Coordinated Universal Time, or that include the local time offset as part of the time stamp.
Guidance: Time stamps generated by the system include date and time. Time is commonly expressed in Coordinated Universal Time (UTC), a modern continuation of Greenwich Mean Time (GMT), or local time with an offset from UTC. Granularity of time measurements refers to the degree of synchronization between system clocks and reference clocks (e.g., clocks synchronizing within hundreds of milliseconds or tens of milliseconds). Organizations may define different time granularities for different system components. Time service can be critical to other security capabilities such as access control and identification and authentication, depending on the nature of the mechanisms used to support those capabilities.

## Enhancements (none current)
Withdrawn by NIST: AU-08(01) (now in SC-45(01)); AU-08(02) (now in SC-45(02)).

## Patterns that use it (6)
- Critical (1): SP-031 Security Monitoring and Response
- Important (4): SP-001 Client Module; SP-002 Server Module; SP-016 DMZ Module; SP-026 PCI Full Environment
- Standard (1): SP-022 Board of Directors Room

## Clauses by framework (46 frameworks)
- iso_27001_2022: 7.5, A.8.15, A.8.17. OSA's own, not in NIST's crosswalk: 7.5, A.8.15
- iso_27002_2022: 8.15, 8.17
- pci_dss_v4: 10.6
- cis_controls_v8: CIS 8, CIS 8.4
- iec_62443: 3-3 SR 2.11
- bsi_grundschutz: OPS.1.1.5
- anssi: Hygiene.29, SecNumCloud.13.7
- osfi_b13: B-13.3.3
- finma_circular: IV.A(28), IV.C(66)
- gdpr: Art.33(1)
- dora: Art.10(1)
- bio2: 8.15, 8.17
- rbi_csf: Annex1.17
- fisc: FISC.O11
- mlps_2: 8.1.4.3
- cra: CRA.I.2l
- cbb_tm: TM-12
- cbuae: CR-3
- nca_ecc: 2-12
- qatar_nia: OS
- uae_ia: T7
- bog_cisd: CISD-VII
- bom_ctrm: 4.2
- cbe_csf: CD-1
- cbn_csf: Part3.5
- sa_js2: JS2-7.3
- bcbs_239: Principle 5
- eba_ict: 3.4.5, 3.5(c)
- ffiec_is: III.B
- hipaa_sr: §164.312(b)
- iosco_cyber: DET-1
- nydfs_500: 500.6
- sebi_cscrf: DE.AU
- cmmc_2: AU
- nrc_73_54: RG5.71-A-AU
- common_criteria: CC Part 2 — FAU
- fda_21_cfr_11: §11.10(e)
- fda_cyber: SA-5
- hitrust_csf: 09.g
- iso_27799: 12.4
- lloyds_ms: MS8.12
- naic_ds: 4-audit
- pra_ss1_23: P-IT.2
- csa_ccm_v4: LOG-06
- csa_aicm: LOG-06
- sec_custody_digital: SEC-CD-15
OSA's mapping for iso_27001_2022 takes NIST's published crosswalk as its base. A clause not marked as OSA's own is in that crosswalk.

## More
- This control as JSON, with guidance and ATT&CK techniques: /api/v1/controls/AU-08
- Clauses only: /api/v1/controls/AU-08?fields=mappings
- Page for people: /controls/au-08/