External Attack Surface Discovery (THR-002-R003) - THR-002

Requirement Details & Guidance

THR-002-R003 · THR-002

Why This Requirement Exists

Effective intelligence depends on collecting information from sources that provide useful visibility into relevant threats.

Implementation Guidance

Use appropriate internal and external sources, including security telemetry, vulnerability data, trusted intelligence providers, sector sharing groups, and public sources. Assess source reliability and relevance.

Practical Application & Audit Readiness

THR-002-R003 · Field Guidance

Business Examples

Common Audit Findings

Common Mistakes

Best Practices & Ownership

THR-002 · Recommended Approach

Recommended Practices

Typical Owner

Cross-Mapped Regulatory Frameworks

Harmonized Control Mappings

FRAMEWORK CODE	FRAMEWORK NAME & DETAILS	FAMILY / CATEGORY	VERSION	ACTION
CERT-IN	CERT-In Directions The CERT-In Directions issued under India’s Inform... Clause: Annexure I(i) – Targeted scanning/probing of critical networks/systems	India Direction	v2022	View →
CIS-V8	CIS Controls CIS Controls are a prioritized set of cybersecurit... Clause: Control 01 – Inventory and Control of Enterprise Assets: 1.3 – Utilize an Active Discovery Tool	CIS Best Practice	vv8	View →
DORA	Digital Operational Resilience Act The EU Digital Operational Resilience Act establis... Clause: Article 8(2) – Continuous identification of ICT risk sources, cyber threats and ICT vulnerabilities Article 8(4) – Identification and mapping of critical information/ICT assets, configurations and interdependencies	EU Regulation	vCurrent	View →
GDPR	General Data Protection Regulation (GDPR) The General Data Protection Regulation is a bindin... Clause: Article 32(1) – Security of processing; Article 32(1)(d) – Testing, assessing and evaluating security measures	EU Regulation	vCurrent	View →
HIPAA	Health Insurance Portability and Accountability Act HIPAA is a U.S. federal law supported by implement... Clause: § 164.312(h) Standard: Vulnerability management	US Law	vCurrent	View →
IRDAI	IRDAI Information & Cyber Security Guidelines IRDAI information and cyber-security requirements... Clause: §2.18-3.1 – Identification of Potential Threats; §2.18-3.2 – Threat Intelligence Process	India Guideline	vLatest	View →
NIS2	NIS2 Directive The NIS2 Directive establishes EU-wide cybersecuri... Clause: Article 21(2)(e) – Security in network and information systems acquisition, development and maintenance, including vulnerability handling and disclosure	EU Directive	vCurrent	View →
NIST-CSF	NIST Cybersecurity Framework (CSF) The NIST Cybersecurity Framework provides high-lev... Clause: ID.RA – Risk Assessment \| ID.RA-03 – Internal and external threats to the organization are identified and recorded	NIST Framework	v2	View →
NIST80053	NIST SP 800-53 NIST SP 800-53 Rev. 5 presents control families, i... Clause: 3.16 – RISK ASSESSMENT, 3.5 – CONFIGURATION MANAGEMENT; RA-5 – VULNERABILITY MONITORING AND SCANNING, CM-8 – SYSTEM COMPONENT INVENTORY	NIST Control Catalog	vRev. 5	View →
PCI-DSS	PCI DSS PCI DSS is an industry security standard maintaine... Clause: 11.3.1 – Internal vulnerability scans are performed as; 11.3.2 – External vulnerability scans are performed as	PCI Standard	v4	View →
RBI-CSF	RBI Cyber Security Framework / Master Directions RBI cyber-security requirements and directions set... Clause: 1) Inventory Management of Business IT Assets – 1.1 Asset inventory incl. business/customer data, applications, infrastructure, facilities, key personnel and criticality; 4) Network Management and Security – 4.2 Centralised inventory of authorised network-connected/enabling devices; 7) Patch/Vulnerability & Change Management – 7.1 Risk-based patch inventory, identification and application to minimise exposure	India Regulation	vLatest	View →
SEBI-CSCRF	SEBI Cyber Security & Cyber Resilience Framework SEBI’s Cybersecurity and Cyber Resilience Framewor... Clause: 2.1 ID.AM: Asset Management; 4.1 DE.CM: Security Continuous Monitoring	India Regulation	vLatest	View →
SOC2	SOC 2 Trust Services Criteria SOC 2 is an independent examination and reporting... Clause: CC2.1 – Information and Communication – COSO Principle 13: The entity obtains or generates and uses relevant, quality information to support the functioning of internal control. CC7.1 – System Operations – To meet its objectives, the entity uses detection and monitoring procedures to identify (1) changes to configurations that result in the introduction of new vulnerabilities, and (2) susceptibilities to newly discovered vulnerabilities. CC3.2 – Risk Assessment – COSO Principle 7: The entity identifies risks to the achievement of its objectives across the entity and analyzes risks as a basis for determining how the risks should be managed.	AICPA Audit Framework	vLatest	View →

Parent Domain Context

Governance Domain Baseline

Domain Name:

Threat Intelligence & Threat Management (THR)

Purpose:

To proactively identify, assess, and manage threats to the organization.

Scope:

Enterprise

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Parent Control Context

Control Baseline

Control Name:

Attack Surface Management (THR-002)

Summary:

Establishes attack surface management including asset discovery, external ASM, internal ASM, exposure assessment, prioritization, continuous monitoring, reporting, review, and continuous improvement.

Business Description:

Establish and maintain continuous discovery, inventory, assessment, monitoring, and governance of internal, external, cloud, and third-party attack surfaces.

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