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CRY-07: Encrypting Data At Rest

CRY 10 — Critical Protect

Cryptographic mechanisms exist to prevent the unauthorized disclosure of data at rest.

Renumbered: Formerly CRY-05 in SCF 2025.4.

Code reused: In SCF 2025.4 and earlier, CRY-07 was Wireless Access Authentication & Encryption. That control is now CFG-04.8.

Control Question: Are cryptographic mechanisms utilized to prevent unauthorized disclosure of data at rest?

General (49)
Framework Mapping Values
AICPA Privacy Management Framework (PMF) S7.3-POF2
AICPA TSC 2017:2022 (used for SOC 2) (source) CC6.1 CC6.1-POF10 CC6.7 CC6.7-POF2 CC6.7-POF3
CIS CSC 8.1 3.6 3.9 3.11
CIS CSC 8.1 IG1 3.6
CIS CSC 8.1 IG2 3.6 3.9 3.11
CIS CSC 8.1 IG3 3.6 3.9 3.11
CSA CCM 4.1.0 CEK-03 UEM-08
CSA IoT SCF 2 DAT-04
GovRAMP SC-13 SC-28 SC-28(01)
GovRAMP Core SC-13 SC-28
GovRAMP Low SC-13
GovRAMP Low+ SC-13 SC-28
GovRAMP Moderate SC-13 SC-28 SC-28(01)
GovRAMP High SC-13 SC-28 SC-28(01)
IEC 62443-4-2 2019 CR 4.1(a)
ISO 27002 2022 8.24
ISO 27017 2015 10.1.1
ISO 27018 2025 8.24
MITRE ATT&CK 16 T1003 T1003.001 T1003.002 T1003.003 T1003.004 T1003.005 T1003.006 T1003.007 T1003.008 T1005 T1025 T1041 T1048 T1048.002 T1048.003 T1052 T1052.001 T1078 T1078.001 T1078.003 T1078.004 T1213 T1213.001 T1213.002 T1213.004 T1213.005 T1530 T1550.001 T1552 T1552.001 T1552.002 T1552.003 T1552.004 T1565 T1565.001 T1565.003 T1567 T1599 T1599.001 T1602 T1602.001 T1602.002
MPA Content Security Program 5.3.1 TS-1.0 TS-3.0
NAIC Insurance Data Security Model Law (MDL-668) 4.D(2)(d)
NIST 800-53 R4 SC-13 SC-28 SC-28(1)
NIST 800-53 R5.2 SC-13 SC-28 SC-28(01)
NIST 800-53B R5 (low) (source) SC-13
NIST 800-53B R5 (moderate) (source) SC-13 SC-28 SC-28(01)
NIST 800-53B R5 (high) (source) SC-13 SC-28 SC-28(01)
NIST 800-82 R3 SC-13 SC-28 SC-28(01)
NIST 800-82 R3 LOW OT Overlay SC-13
NIST 800-82 R3 MODERATE OT Overlay SC-13 SC-28 SC-28(01)
NIST 800-82 R3 HIGH OT Overlay SC-13 SC-28 SC-28(01)
NIST 800-160 Vol2 R1 SC-28(01)
NIST 800-161 R1 SC-28
NIST 800-161 R1 Flow Down SC-28
NIST 800-161 R1 Level 2 SC-28
NIST 800-161 R1 Level 3 SC-28
NIST 800-171 R2 (source) 3.8.6 3.13.16
NIST 800-171 R3 (source) 03.13.08 03.13.11
NIST 800-171A (source) 3.8.6 3.13.16
NIST 800-171A R3 (source) A.03.13.08[02] A.03.13.11.ODP[01] A.03.13.11
NIST CSF 2.0 (source) PR.DS-01
NIST Privacy Framework 1.0 PR.DS-P1
OWASP Top 10 2025 A04:2025
PCI DSS 4.0.1 (source) 3.3.2 3.5 3.5.1.2 3.5.1.3 8.3.2 9.4
PCI DSS 4.0.1 SAQ A-EP (source) 8.3.2
PCI DSS 4.0.1 SAQ C (source) 8.3.2
PCI DSS 4.0.1 SAQ D Merchant (source) 3.3.2 3.5.1.2 3.5.1.3 8.3.2
PCI DSS 4.0.1 SAQ D Service Provider (source) 3.3.2 3.5.1.2 3.5.1.3 8.3.2
SCF DPMP 2026 7.2
SWIFT CSF 2025 2.5A
US (22)
EMEA (16)
Framework Mapping Values
EMEA Germany C5 2026 AM-12.01B.3 AM-12.01B.8 OPS-19.01B.8 OPS-31.02B OPS-34.02B.6 CRY-05.01B CRY-05.01AC
EMEA Spain CCN-STIC 825 op.exp.10 mp.si.2 mp.info.3
EMEA EU Cyber Resiliency Act Annex I 2024 Annex I, Part I(2)(e)
EMEA EU DORA RTS 2024 Article 6.2(a) Article 35.1(a)
EMEA EU EBA GL/2019/04 3.4.4.36(f)
EMEA UK CAF 4.0 B3.c
EMEA UK CAP 1850 2020 B3
EMEA UK DEFSTAN 05-138 2024 2310 2317
EMEA UK DEFSTAN 05-138 - L1 2024 2310 2317
EMEA UK DEFSTAN 05-138 - L2 2024 2310 2317
EMEA UK DEFSTAN 05-138 - L3 2024 2310 2317
EMEA LUX CCSF 20/750 2020 3.4.4-36.f
EMEA Saudi Arabia IoT CGIoT-1 2024 2-6-2 2-7-2
EMEA Saudi Arabia CSCC-1 2019 2-7-1-2
EMEA Saudi Arabia ECC-1 2018 2-8-3-3
EMEA Saudi Arabia OTCC-1 2022 2-6-1-1
APAC (9)
Framework Mapping Values
APAC Australia CCM 2026 PRO-08
APAC Australia ISM June 2026 ISM-0459 ISM-1080
APAC India RBI Digital Payments 2021 56.e 64.0
APAC India SEBI CSCRF 2024 PR.DS.S1
APAC Japan ISMAP 8.3.1.5
APAC Malaysia RMiT 2025 A2-C1 A5-A4(e) A5-B1 A10-B8(a)
APAC New Zealand NZISM 3.9 8.4.13.C.01 17.1.54.C.01
APAC Singapore CCOP CII 2026 5.13.3(a)
APAC Singapore MAS TRM 2021 11.1.3
Americas (1)
Framework Mapping Values
Americas Canada ITSP-10-171 2025 03.13.08 03.13.11

Capability Maturity Model

Level 0 — Not Performed

Practices are non-existent, based on the inability to demonstrate an implemented and operational capability. A reasonable person would conclude the control is not being performed.

Level 1 — Performed Informally

Cryptographic Protections (CRY) domain capabilities are ad hoc and inconsistent. Capability criteria associated with this control may include: ▪ Policies, standards & procedures associated with CRY domain capabilities provide limited coverage due to the depth and breadth of the existing documentation. ▪ Cryptography management-related activities are decentralized (e.g., a localized/regionalized function) and uses non-standardized methods to implement secure, resilient and compliant practices. ▪ IT and/or cybersecurity personnel provide an encryption solution (software or hardware) for the storage of sensitive/regulated data.

Level 2 — Planned & Tracked

Cryptographic Protections (CRY) capabilities are requirements-driven, but are not standardized across the entity (e.g., local/regional level consistency). Capability criteria associated with this control reasonably expect the following criteria to exist: ▪ Policies and standards associated with CRY domain capabilities are formally documented and centrally-managed by the entity. ▪ Standardized Operating Procedures (SOP) associated with CRY domain capabilities are documented and maintained by process owners. ▪ IT and/or cybersecurity personnel work with business stakeholders and process owners to appropriately scope and reasonably implement cybersecurity and data protection controls associated with CRY domain capabilities to address applicable statutory, regulatory and/or contractual requirements for Technology Assets, Applications, Services and/or Data (TAASD). ▪ Cryptographic management controls-related controls are primarily administrative and preventative in nature (e.g., policies, standards and procedures & guidelines). ▪ Cryptographic management may be a defined function (e.g., team or department) or assigned as an additional duty to existing IT and/or cybersecurity personnel. ▪ Technology Assets, Applications and/or Services (TAAS) that store, process or transmit sensitive/regulated data use cryptographic mechanisms to prevent unauthorized disclosure of information as an alternate to physical safeguards. ▪ External compliance requirements for cryptography are identified and documented, based on applicable laws, regulations and contractual obligations. ▪ IT and/or cybersecurity personnel work with business stakeholders and process owners to implement cryptographic mechanisms that are applicability for statutory, regulatory and/or contractual compliance obligations.

Level 3 — Well Defined

Cryptographic Protections (CRY) capabilities are standardized across the entity for applicability to People, Processes, Technologies, Data and/or Facilities (PPTDF) to ensure consistency for Technology Assets, Applications, Services and/or Data (TAASD). Capability criteria associated with this control reasonably expect the following criteria to exist: ▪ Policies and standards associated with CRY domain capabilities are formally documented and centrally-managed by the entity's Governance, Risk & Compliance (GRC) team, or similar function. ▪ Standardized Operating Procedures (SOP) associated with CRY domain capabilities are well-documented and kept current by process owners. ▪ A security engineering team, or similar function, is appropriately staffed and supported to implement and maintain CRY domain capabilities. ▪ Technology is leveraged to enhance the efficiency and accuracy of cryptographic protections operations (e.g., PKI management tool). ▪ The entity's Governance, Risk & Compliance (GRC) team, or similar function, works with business stakeholders and process owners to appropriately scope and reasonably implement cybersecurity and data protection controls associated with CRY domain capabilities to address Minimum Compliance Requirements (MCR) (e.g., applicable statutory, regulatory and/or contractual requirements) and Discretionary Security Requirements (DSR) (e.g., entity-required controls). ▪ An implemented and operational cryptographic capability exists to prevent unauthorized disclosure of data at rest.

Level 4 — Quantitatively Controlled

Cryptographic Protections (CRY) capabilities, in addition to being standardized across the entity and centrally managed to ensure consistency across Technology Assets, Applications, Services and/or Data (TAASD), efforts are metrics driven to provide sufficient insight for decision makers to predict optimal performance, ensure continued operations and/or identify areas for improvement. Capability criteria associated with this control reasonably expect the following criteria to exist: ▪ Applicable SCR-CMM Level 3 (Well Defined) capabilities are implemented and operational. ▪ Metrics reporting includes quantitative analysis of Key Performance Indicators (KPIs). ▪ Metrics reporting includes quantitative analysis of Key Risk Indicators (KRIs). ▪ Scope of metrics, KPIs and KRIs covers organization-wide cybersecurity and data protection controls, including functions performed by third-parties. ▪ Organizational leadership maintains a formal process to objectively review and respond to metrics, KPIs and KRIs (e.g., monthly or quarterly review). ▪ Based on metrics analysis, process improvement recommendations are submitted for review and are handled in accordance with change control processes. ▪ Business and technical stakeholders are involved in reviewing and approving proposed changes to evolve capabilities.

Level 5 — Continuously Improving

Utilize SCR-CMM Level 3 or Level 4 (if available) criteria definitions: ▪ There are no defined Level 5 criteria, since it is reasonable to assume a continuously-improving process is not necessary to operationalize this control. ▪ Level 5 capabilities should be considered “world-class” where the control builds on Level 4 capabilities, but are continuously improving through Artificial Intelligence (AI) and/or Machine Learning (ML) technologies. ▪ While it may be possible to develop responsive capabilities for this control through the use of AI and/or ML technologies, the criteria would be organization-specific to define.

Assessment Objectives

  1. CRY-07_A01 the confidentiality of sensitive / regulated data stored on digital media is protected during transport using cryptographic mechanisms or alternative physical safeguards.
  2. CRY-07_A02 cryptographic mechanisms are implemented to prevent the unauthorized disclosure of sensitive / regulated data while in storage.
  3. CRY-07_A03 cryptographic uses are defined.
  4. CRY-07_A04 information requiring cryptographic protection is defined.
  5. CRY-07_A05 system components or media requiring cryptographic protection is/are defined.
  6. CRY-07_A06 the types of cryptography for protecting the confidentiality of sensitive / regulated data are defined.
  7. CRY-07_A07 organization-defined types of cryptography are implemented to protect the confidentiality of sensitive / regulated data at rest.
  8. CRY-07_A08 cryptographic mechanisms are implemented to prevent the unauthorized disclosure of CUI while in storage.
  9. CRY-07_A09 the types of cryptography for protecting the confidentiality of CUI are defined.
  10. CRY-07_A10 the following types of cryptography are implemented to protect the confidentiality of CUI: <A.03.13.11.ODP[01]: types of cryptography>.

Evidence Requirements

E-CRY-01 Cryptographic Protections

Documented evidence of organization-approved cryptographic solutions and modules for both data at rest and in transit.

Cryptographic Protections

Technology Recommendations

Micro/Small

  • NIST Cryptographic Module Validation Program (CMVP) (https://csrc.nist.gov)
  • Microsoft BitLocker (https://microsoft.com)

Small

  • NIST Cryptographic Module Validation Program (CMVP) (https://csrc.nist.gov)
  • Microsoft BitLocker (https://microsoft.com)

Medium

  • NIST Cryptographic Module Validation Program (CMVP) (https://csrc.nist.gov)
  • Microsoft BitLocker (https://microsoft.com)

Large

  • NIST Cryptographic Module Validation Program (CMVP) (https://csrc.nist.gov)
  • Microsoft BitLocker (https://microsoft.com)

Enterprise

  • NIST Cryptographic Module Validation Program (CMVP) (https://csrc.nist.gov)
  • Microsoft BitLocker (https://microsoft.com)

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