Version: 1.0 | Last Updated: April 2026 | Status: Draft

NIST 800-53 Compliance

ASCEND implements selected NIST Special Publication 800-53 Rev 5 security controls relevant to AI agent governance.

Scope

This document covers 6 of 20 NIST 800-53 Rev 5 control families. These 6 families were selected because they directly apply to ASCEND's function as an AI agent governance platform. The remaining 14 families (AT, CA, CP, IR, MA, MP, PE, PL, PM, PS, PT, RA, SA, SR) are outside the scope of ASCEND's application layer and are the responsibility of the customer's infrastructure and organizational controls. This document does not constitute a NIST 800-53 certification or assessment.

Control Family Coverage

Family	Code	Coverage	Controls Implemented
Access Control	AC	Full	AC-2, AC-3, AC-4, AC-6
Audit and Accountability	AU	Full	AU-2, AU-6, AU-7, AU-9
Configuration Management	CM	Full	CM-3, CM-6, CM-8
Identification and Authentication	IA	Full	IA-2, IA-4, IA-5
System and Communications Protection	SC	Full	SC-7, SC-8, SC-13
System and Information Integrity	SI	Full	SI-3, SI-4, SI-12

---

Access Control (AC)

AC-2: Account Management

Requirement: Manage information system accounts, including establishing, activating, modifying, reviewing, disabling, and removing accounts.

ASCEND Implementation:

Enhancement	Implementation	Evidence
AC-2(1)	Automated account management	Cognito integration logs
AC-2(2)	Automated temporary account removal	Expiration automation
AC-2(3)	Automatic account disabling	Inactivity detection
AC-2(4)	Automated audit actions	Account change logs

Account Lifecycle:

{
  "account_management": {
    "provisioning": "admin_controlled",
    "authentication": "cognito_mfa",
    "authorization": "role_based",
    "review_frequency": "quarterly",
    "inactivity_threshold_days": 90,
    "auto_disable": true,
    "audit_all_changes": true
  }
}

---

AC-3: Access Enforcement

Requirement: Enforce approved authorizations for logical access to information and system resources.

ASCEND Implementation:

Enhancement	Implementation	Evidence
AC-3(1)	Restricted access for privileged functions	Role separation
AC-3(2)	Dual authorization	Approval workflows
AC-3(7)	Role-based access control	RBAC policies
AC-3(14)	Individual accountability	User attribution

Action-to-Control Mapping:

# From enrichment.py - AC-3 mappings
NIST_CONTROL_MAPPINGS = {
    "database_read": {
        "nist_control": "AC-3",
        "nist_family": "Access Control",
        "nist_description": "Access Enforcement"
    },
    "database_write": {
        "nist_control": "AC-3",
        "nist_family": "Access Control",
        "nist_description": "Access Enforcement"
    },
    "file_read": {
        "nist_control": "AC-3",
        "nist_family": "Access Control",
        "nist_description": "Access Enforcement"
    },
    "api_call": {
        "nist_control": "AC-3",
        "nist_family": "Access Control",
        "nist_description": "Access Enforcement"
    }
}

---

AC-4: Information Flow Enforcement

Requirement: Enforce approved authorizations for controlling the flow of information within the system and between interconnected systems.

ASCEND Implementation:

Enhancement	Implementation	Evidence
AC-4(1)	Object security attributes	Data classification tags
AC-4(4)	Content check	Data inspection
AC-4(17)	Domain authentication	Organization isolation

Data Flow Controls:

{
  "information_flow": {
    "data_classification_required": true,
    "cross_organization_blocked": true,
    "external_transfer_controls": {
      "enabled": true,
      "approval_required": true,
      "audit_logging": "detailed"
    },
    "sensitive_data_markers": ["pii", "phi", "pci", "confidential"]
  }
}

---

AC-6: Least Privilege

Requirement: Employ the principle of least privilege, allowing only authorized accesses for users which are necessary to accomplish assigned tasks.

ASCEND Implementation:

Enhancement	Implementation	Evidence
AC-6(1)	Authorize access to security functions	Admin role separation
AC-6(2)	Non-privileged access for non-security functions	Standard user roles
AC-6(5)	Privileged accounts	Elevated access tracking
AC-6(9)	Auditing use of privileged functions	Privilege audit logs

Agent Least Privilege:

{
  "agent_id": "customer-service-agent",
  "least_privilege": {
    "allowed_action_types": ["email_send", "ticket_create"],
    "blocked_action_types": ["database_delete", "config_change"],
    "allowed_resources": ["/api/tickets/*", "/api/customers/read"],
    "blocked_resources": ["/api/admin/*", "/api/system/*"],
    "max_risk_score": 60,
    "requires_approval_above": 40
  }
}

---

Audit and Accountability (AU)

AU-2: Audit Events

Requirement: Identify the events that the system is capable of auditing and coordinate the audit function with other entities.

ASCEND Audited Events:

Event Category	Events	Log Level
Authentication	Login, logout, MFA, failed attempts	All
Authorization	Access grants, denials, escalations	All
Agent Actions	All agent actions with full context	All
Configuration	Policy changes, rule updates, settings	All
System	Health events, errors, performance	Warning+

Audit Event Structure:

{
  "audit_event": {
    "event_id": "evt_20260402_143052_a1b2c3d4",
    "timestamp": "2026-04-02T14:30:52Z",
    "event_type": "agent_action",
    "organization_id": 4,
    "actor": {
      "type": "agent",
      "id": "customer-service-agent",
      "user_id": 15
    },
    "action": {
      "type": "database_write",
      "target": "customers.email",
      "result": "approved"
    },
    "nist_control": "AU-2",
    "correlation_id": "corr_xyz789"
  }
}

---

AU-6: Audit Review, Analysis, and Reporting

Requirement: Review and analyze system audit records for indications of inappropriate or unusual activity.

ASCEND Implementation:

Enhancement	Implementation	Evidence
AU-6(1)	Automated integration	Real-time analysis
AU-6(3)	Correlate audit repositories	Centralized logging
AU-6(5)	Scanning and monitoring	Continuous monitoring
AU-6(6)	Correlation with physical monitoring	Session tracking

Automated Analysis:

{
  "audit_analysis": {
    "real_time_alerting": true,
    "anomaly_detection": {
      "enabled": true,
      "baseline_period_days": 14,
      "sensitivity": "high"
    },
    "pattern_recognition": {
      "enabled": true,
      "patterns": ["unusual_volume", "after_hours", "new_resources"]
    },
    "reporting": {
      "daily_summary": true,
      "weekly_trends": true,
      "monthly_compliance": true
    }
  }
}

---

AU-7: Audit Reduction and Report Generation

Requirement: Provide an audit reduction and report generation capability.

ASCEND Implementation:

Feature	Description
Filtering	Filter by date, user, agent, action type
Aggregation	Summary statistics and trends
Search	Full-text search across audit records
Export	PDF, CSV, JSON export formats

---

AU-9: Protection of Audit Information

Requirement: Protect audit information and audit tools from unauthorized access, modification, and deletion.

ASCEND Implementation:

Control	Implementation	Evidence
Integrity	Cryptographic hashing	Hash verification
Immutability	Write-once storage	Append-only logs
Access Control	Admin-only access	Access logs
Backup	Encrypted backup copies	Backup logs

---

Configuration Management (CM)

CM-3: Configuration Change Control

Requirement: Determine the types of changes to the information system that are configuration-controlled.

ASCEND Implementation:

Enhancement	Implementation	Evidence
CM-3(1)	Automated change implementation	Policy engine
CM-3(2)	Test/validate/document changes	Change history
CM-3(4)	Designated change authority	Approval workflows

Action-to-Control Mapping:

# From enrichment.py - CM-3 mappings
NIST_CONTROL_MAPPINGS = {
    "config_change": {
        "nist_control": "CM-3",
        "nist_family": "Configuration Management",
        "nist_description": "Configuration Change Control"
    },
    "system_modification": {
        "nist_control": "CM-3",
        "nist_family": "Configuration Management",
        "nist_description": "Configuration Change Control"
    }
}

---

Identification and Authentication (IA)

IA-2: Identification and Authentication (Organizational Users)

Requirement: Uniquely identify and authenticate organizational users.

ASCEND Implementation:

Enhancement	Implementation	Evidence
IA-2(1)	Multi-factor authentication	MFA logs
IA-2(2)	MFA for local access	Device MFA
IA-2(6)	Separate device authentication	Device certificates
IA-2(8)	Replay-resistant authentication	Token nonces

---

IA-5: Authenticator Management

Requirement: Manage information system authenticators.

ASCEND Implementation:

Enhancement	Implementation	Evidence
IA-5(1)	Password-based authentication	Password policies
IA-5(2)	PKI-based authentication	Certificate management
IA-5(6)	Protection of authenticators	Credential encryption

Credential Action Mapping:

# From enrichment.py - IA-5 mappings
NIST_CONTROL_MAPPINGS = {
    "credential_access": {
        "nist_control": "IA-5",
        "nist_family": "Identification and Authentication",
        "nist_description": "Authenticator Management"
    },
    "password_change": {
        "nist_control": "IA-5",
        "nist_family": "Identification and Authentication",
        "nist_description": "Authenticator Management"
    }
}

---

System and Communications Protection (SC)

SC-7: Boundary Protection

Requirement: Monitor and control communications at the external boundary of the system.

ASCEND Implementation:

Enhancement	Implementation	Evidence
SC-7(3)	Access points	API gateway
SC-7(4)	External telecommunications	TLS enforcement
SC-7(5)	Deny by default	Explicit allow rules

---

SC-8: Transmission Confidentiality and Integrity

Requirement: Protect the confidentiality and integrity of transmitted information.

ASCEND Implementation:

Control	Implementation	Evidence
Confidentiality	TLS 1.3 encryption	Certificate logs
Integrity	HMAC signatures	Integrity verification
Certificate Pinning	API certificate validation	Pin configuration

---

System and Information Integrity (SI)

SI-3: Malicious Code Protection

Requirement: Implement malicious code protection mechanisms.

ASCEND Implementation:

Enhancement	Implementation	Evidence
SI-3(1)	Central management	Centralized policy engine
SI-3(2)	Automatic updates	Policy auto-update
SI-3(8)	Detect unauthorized commands	Command validation

---

SI-4: System Monitoring

Requirement: Monitor the information system to detect attacks and indicators of potential attacks.

ASCEND Implementation:

Enhancement	Implementation	Evidence
SI-4(1)	System-wide monitoring	Full action logging
SI-4(2)	Automated tools	ML-powered detection
SI-4(4)	Inbound/outbound communications	Network monitoring
SI-4(5)	System-generated alerts	Real-time alerting

Action-to-Control Mapping:

# From enrichment.py - SI-4 mappings
NIST_CONTROL_MAPPINGS = {
    "network_scan": {
        "nist_control": "SI-4",
        "nist_family": "System and Information Integrity",
        "nist_description": "System Monitoring"
    },
    "intrusion_detection": {
        "nist_control": "SI-4",
        "nist_family": "System and Information Integrity",
        "nist_description": "System Monitoring"
    }
}

---

SI-12: Information Handling and Retention

Requirement: Handle and retain information within the information system in accordance with applicable laws and policies.

ASCEND Implementation:

Control	Implementation	Evidence
Retention Policies	Configurable retention periods	Policy configuration
Secure Disposal	Cryptographic erasure	Disposal logs
Data Classification	Automatic classification	Classification tags

Data Handling Action Mapping:

# From enrichment.py - SI-12 mappings
NIST_CONTROL_MAPPINGS = {
    "data_export": {
        "nist_control": "SI-12",
        "nist_family": "System and Information Integrity",
        "nist_description": "Information Handling and Retention"
    },
    "data_delete": {
        "nist_control": "SI-12",
        "nist_family": "System and Information Integrity",
        "nist_description": "Information Handling and Retention"
    }
}

---

Complete Action-to-Control Mapping

Action Type	NIST Control	Family	Description
database_read	AC-3	Access Control	Access Enforcement
database_write	AC-3	Access Control	Access Enforcement
database_delete	AC-6	Access Control	Least Privilege
file_read	AC-3	Access Control	Access Enforcement
file_write	AC-3	Access Control	Access Enforcement
file_delete	AC-6	Access Control	Least Privilege
data_export	SI-12	System & Info Integrity	Information Handling
data_exfiltration	AC-4	Access Control	Information Flow
config_change	CM-3	Configuration Mgmt	Change Control
system_modification	CM-3	Configuration Mgmt	Change Control
credential_access	IA-5	Identification & Auth	Authenticator Mgmt
privilege_escalation	AC-6	Access Control	Least Privilege
user_create	AC-2	Access Control	Account Management
user_delete	AC-2	Access Control	Account Management
api_call	AC-3	Access Control	Access Enforcement
email_send	AU-2	Audit & Accountability	Audit Events
network_scan	SI-4	System & Info Integrity	System Monitoring

---

NIST Compliance Reporting

Control Assessment Export

# Export NIST control assessment
curl -X POST "https://pilot.owkai.app/api/compliance/export/nist" \
  -H "X-API-Key: your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "period_start": "2026-04-01",
    "period_end": "2026-04-30",
    "control_families": ["AC", "AU", "CM", "IA", "SC", "SI"],
    "format": "json"
  }'

---

For NIST compliance questions, contact compliance@owkai.app