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END-04.1: Always On Antimalware Protection

END 9 — Critical Detect

Mechanisms exist to ensure unless specifically authorized by management on a case-by-case basis for a limited time period that anti-malware technologies: (1) Are continuously running in real-time; and (2) Cannot be disabled or altered by non-privileged users.

Renumbered: Formerly END-04.7 in SCF 2025.4.

Code reused: In SCF 2025.4 and earlier, END-04.1 was Automatic Antimalware Signature Updates. That control is now END-03.2.

Control Question: Does the organization ensure that anti-malware technologies are continuously running in real-time and cannot be disabled or altered by non-privileged users, unless specifically authorized by management on a case-by-case basis for a limited time period?

General (18)
Framework Mapping Values
AICPA TSC 2017:2022 (used for SOC 2) (source) CC6.8-POF5
CIS CSC 8.1 10.4
CIS CSC 8.1 IG2 10.4
CIS CSC 8.1 IG3 10.4
COBIT 2019 DSS05.01
CSA CCM 4.1.0 UEM-09
IEC 62443-2-1 2024 COMP 2.1
MPA Content Security Program 5.3.1 TS-1.0 TS-1.3
NIST 800-171 R2 (source) 3.14.5
NIST 800-171 R3 (source) 03.14.02.a 03.14.02.c.01 03.14.02.c.02
NIST 800-171A (source) 3.14.5[c]
NIST 800-171A R3 (source) A.03.14.02.a[01] A.03.14.02.c.01[01] A.03.14.02.c.01[02]
PCI DSS 4.0.1 (source) 5.3 5.3.2 5.3.2.1 5.3.3 5.3.5
PCI DSS 4.0.1 SAQ A-EP (source) 5.3.2 5.3.2.1 5.3.3 5.3.5
PCI DSS 4.0.1 SAQ C (source) 5.3.2 5.3.2.1 5.3.3 5.3.5
PCI DSS 4.0.1 SAQ C-VT (source) 5.3.2 5.3.3 5.3.5
PCI DSS 4.0.1 SAQ D Merchant (source) 5.3.2 5.3.2.1 5.3.3 5.3.5
PCI DSS 4.0.1 SAQ D Service Provider (source) 5.3.2 5.3.2.1 5.3.3 5.3.5
US (5)
Framework Mapping Values
USA Federal CMMC 2.0 Level 1 SI.L1-B.1.XV
USA Federal CMMC 2.0 Level 1 AOs SI.L1-B.1.XV[c]
USA Federal CMMC 2.0 Level 2 SIL2.-3.14.5
USA Federal FAR 52.204-21 52.204-21(b)(1)(xv)
USA Federal IRS 1075 2021 SI-3(IRS-Defined)-1
EMEA (6)
APAC (1)
Framework Mapping Values
APAC India SEBI CSCRF 2024 PR.IP.S4
Americas (1)
Framework Mapping Values
Americas Canada ITSP-10-171 2025 03.14.02.A 03.14.02.C.01 03.14.02.C.02

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

Endpoint Security (END) domain capabilities are ad hoc and inconsistent. Capability criteria associated with this control may include: ▪ Policies, standards & procedures associated with END domain capabilities provide limited coverage due to the depth and breadth of the existing documentation. ▪ Endpoint security management-related activities are decentralized (e.g., a localized/regionalized function) and uses non-standardized methods to implement secure, resilient and compliant practices.

Level 2 — Planned & Tracked

Endpoint Security (END) 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 END domain capabilities are formally documented and centrally-managed by the entity. ▪ Standardized Operating Procedures (SOP) associated with END 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 END domain capabilities to address applicable statutory, regulatory and/or contractual requirements for Technology Assets, Applications, Services and/or Data (TAASD). ▪ Endpoint security-related controls are primarily administrative and preventative in nature (e.g., policies, standards and procedures & guidelines). ▪ Endpoint security management may be a defined function (e.g., team or department) or assigned as an additional duty to existing IT and/or cybersecurity personnel. ▪ Anti-malware technologies are centralized, deployed on all technology assets that can run anti-malware software. ▪ Anti-malware technologies are configured to generate event logs that can be centrally-reviewed (e.g., forwarded to a SIEM). ▪ Anti-malware detection tools are configured to provide real-time protection (e.g., always on).

Level 3 — Well Defined

Endpoint Security (END) 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 END 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 END domain capabilities are well-documented and kept current by process owners. ▪ An endpoint technology management team, or similar function, is appropriately staffed and supported to implement and maintain END domain capabilities. ▪ Technology is leveraged to enhance the efficiency and accuracy of endpoint security operations (e.g., unified endpoint management solution). ▪ 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 END 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 capability exists to ensure that anti-malware technologies are continuously running in real-time and cannot be disabled or altered by non-privileged users, unless specifically authorized by management on a case-by-case basis for a limited time period.

Level 4 — Quantitatively Controlled

Endpoint Security (END) 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. END-04.1_A01 malicious code protection mechanisms are configured to perform real-time scans of files from external sources as the files are downloaded, opened or executed.
  2. END-04.1_A02 malicious code protection mechanisms are configured to perform scans of the system per an organization-defined frequency.
  3. END-04.1_A03 malicious code protection mechanisms are configured to perform real-time scans of files from external sources at endpoints or system entry and exit points as the files are downloaded, opened, or executed.
  4. END-04.1_A04 malicious code protection mechanisms are configured to perform scans of the system <A.03.14.02.ODP[01]: frequency>.
  5. END-04.1_A05 real-time malicious code scans of files from external sources as files are downloaded, opened, or executed are performed.
  6. END-04.1_A06 anti-malware technologies are configured to run continuously in real-time on endpoints.
  7. END-04.1_A07 anti-malware technologies cannot be disabled or altered by non-privileged users.
  8. END-04.1_A08 exceptions that permit anti-malware technologies to be disabled or altered are specifically authorized by management on a case-by-case basis for a limited time period.
  9. END-04.1_A09 the maximum time period for which a management-authorized exception to anti-malware protection may remain in effect is defined.

Technology Recommendations

Micro/Small

  • Antimalware software

Small

  • Antimalware software

Medium

  • Antimalware software

Large

  • Antimalware software

Enterprise

  • Antimalware software

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