NIST 800-207 Compliant Device Attestation | Continuous Zero Trust

Never Trust. Cryptographically Verify Every Endpoint.

NexusCore continuously scores device posture before granting microservice and internal network ingress. Enforce hardware-backed TPM verification, disk encryption, and live EDR telemetry in under 22ms without clunky MDM agents.

πŸ“– Explore Verification Matrix
<25ms
Evaluation Latency
100%
Hardware Attested
Zero
Agent Friction
posture-daemon://live-audit
● REALTIME GUARD
πŸ’»
Workstation Alpha-9
ID: dev-sec-node-4019 β€’ macOS / ARM64
Trust Index 98/100
πŸ” Hardware Root of Trust (TPM 2.0)
PASS: Valid PKI
πŸ›‘οΈ Disk Crypto State (XTS-AES-256)
PASS: Enforced
πŸ“‘ EDR Telemetry & Signal Rate
PASS: Active 1.2s
βš™οΈ CVE Signature & Kernel Integrity
PASS: 0 Criticals
● Endpoint authorized for Prod Ingress RTT: 18.4ms
Policy: Strict Enclave v2 Hash: 8f9b..e412
βš™οΈ Continuous Assessment Daemon

Non-Stop Posture Inspection.
Zero Static Trust Assumed.

Authentication is not a point-in-time handshake. The NexusCore Trust Engine continually probes device states, revoking cryptographic lease credentials in sub-second velocity if any invariant degrades.

πŸ›‘οΈ TPM / Secure Enclave

OS & Kernel Attestation

Cryptographic verification of Measured Boot registers (PCR 0-7), secure boot validation, kernel extension signatures, and jailbreak / rooting detection.

  • βœ“ Hardware Root of Trust Keying
  • βœ“ Kernel Hook & Debugger Probing
  • βœ“ CVE Microcode Patch Thresholds
Cadence: Instant Event + 60s Enforced
πŸ” XTS-AES-256

Disk & Volume Cryptography

Direct OS API interrogations to confirm active FileVault 2, BitLocker with TPM PIN, or dm-crypt/LUKS keys, ensuring zero plaintext at rest across all partitions.

  • βœ“ Full Boot & Data Volume Scrutiny
  • βœ“ Hardware Key Protector Binding
  • βœ“ External Storage Encryption Audits
Entropy: CSPRNG Standard 100% Locked
πŸ“‘ Live Heartbeat

EDR Telemetry & Isolation

Real-time status integration with CrowdStrike, SentinelOne, Microsoft Defender, and custom eBPF probes. Inactive or tampered sensors trigger immediate micro-segmentation.

  • βœ“ Process Tamper & Crash Watchdogs
  • βœ“ Threat Level Telemetry Correlation
  • βœ“ Sub-second Quarantine Routing
Max Drift Allowed: 2.0s Stream Synchronized
Runtime Telemetry Trace

Live Posture Evaluation Cycle

Policy: zero-trust-strict-finance Status: PASSING (Score 99.4)
STAGE 01 β€’ ATTESTATION
πŸ’» TPM AK Validation

Asymmetric signing of nonce by TPM 2.0 enclave proving device identity.

Signature Valid (2ms)
STAGE 02 β€’ VOLUME AUDIT
πŸ’Ώ BitLocker / FileVault

Block driver interrogation confirms hardware-backed AES cipher active.

Encrypted (4ms)
STAGE 03 β€’ BEHAVIOR EDR
πŸ›‘οΈ Sensor Pulse

Realtime telemetry stream queried; zero active indicators of compromise (IOC).

Zero Flags (9ms)
STAGE 04 β€’ TOKEN MINT
🎟️ Ephemeral Proof

Short-lived JWT (60s) injected with posture claims for API gateway traversal.

Lease Granted (3ms)
$ nexus-trust-daemon --inspect --device-uuid dev-sec-node-4019 --strict
Enforcement Mode: Hardware TPM2 Configure Policies β†’
βš–οΈ Contextual Policy Engine

Dynamic Authorization Matrix.
Adaptive MFA Linked to Risk.

Policies evaluate user role, hardware security level, geovelocity, and live posture score simultaneously. Access permissions dynamically contract, escalate to FIDO2 WebAuthn challenges, or sever immediately.

πŸŽ›οΈ Contextual Risk Simulator

Interactive Input
2. Hardware Posture Score 95 / 100
10 (Compromised/Jailbroken) 50 (No Disk Crypto) 100 (TPM 2.0 Enforced)
πŸ’‘ The computed aggregate risk score feeds directly into Rego/OPA policy constraints evaluated on edge envoys.
Engine Verdict: GRANT WITH CONTINUOUS LEASE
Composite Risk: 12/100
🟒

Access Authorized β€’ Zero Stepped Authentication Required

Endpoint hardware posture satisfies TPM 2.0 requirements. Role permissions match device trustworthiness score. Ephemeral 5-minute mTLS certificate issued.

Applied Conditional Rules:
πŸ›‘οΈ MFA Requirement Level
Standard SSO Session
⏱️ Token Lease TTL
300 Seconds (Active Re-attestation)
🌐 Egress Network Routing
Direct Ephemeral Mesh
Declarative Engine Rule [OPA Rego format] v1.2
default allow = false
allow {
    input.device.posture_score >= 75
    input.identity.risk_score < 30
    not input.network.impossible_travel
}
stepup_webauthn {
    input.device.posture_score >= 50
    input.target.sensitivity == "critical"
}
πŸ”‘

FIDO2 / WebAuthn Hardware Bounds

When risk score elevates, bypass push notifications and enforce non-phishable physical YubiKey or TouchID challenges.

⚑

Microsecond Revocation

If disk encryption is disabled during an active SSH or database connection, the envoy sidecar drops the TCP handshake instantly.

πŸ—ΊοΈ

Geovelocity Anomaly Filtering

Correlate BGP routing anomalies and multi-continent logons within minutes to flag automated token replay attacks.

πŸ”Œ Interoperability Grid

Engineered for Your Entire Security Stack.
Bidirectional Sync in Milliseconds.

NexusCore does not replace your investments. We bridge Identity Providers, Device Management, SIEM platforms, and Cloud Infrastructure through low-latency webhooks, OIDC claims, and Kafka event hubs.

πŸ”˜
OIDC / SAML 2.0

Okta & Auth0

Synchronize user claims with continuous hardware posture signals via Okta FastPass and custom inline auth hooks.

Latency: <14ms Bidirectional
πŸͺŸ
Graph API

Microsoft Entra ID

Inject NexusCore risk ratings directly into Azure Conditional Access rules to block risky endpoints from Office 365.

Conditional Access Active Sync
🍎
Apple Silicon

Jamf Pro & Connect

Instantaneous query of macOS FileVault keys, SIP status, and Secure Enclave enrollment flags without extra MDM profiles.

Webhook Webhooks Real-Time
πŸ’»
TPM 2.0 PCR

Microsoft Intune

Correlate Windows 11 BitLocker recovery keys, Defender antivirus updates, and device compliance tags automatically.

Sync Cycle: 5s Certified
πŸ“Š
CEF / JSON Logs

Splunk & Datadog

Stream structured posture event logs, risk fluctuations, and step-up challenge triggers to your central SOC dashboard.

High-Volume HEC 50k eps
πŸ¦…
SOAR Ingress

CrowdStrike Falcon

Bi-directional Zero Trust Assessment (ZTA) score ingestion. Trigger immediate network isolation on high-severity IOCs.

Containment Hook <100ms
🟧
Cedar Policy

AWS Cloud Ingress

Native integration with AWS Verified Access (AVA) and IAM Identity Center. Transmit context headers to private ALB targets.

Trust Provider AVA Verified
🌐
BeyondCorp Link

Google BeyondCorp & Azure

Bridge multi-cloud ingress security policies. Enforce cryptographic device boundaries for IAP and Azure Global Secure Access.

Multi-Cloud VPC Federated
Low-Latency Event Dispatch

Live SIEM & IdP Webhook Dispatch Payload

Format: RFC 7519 JWT Claims Dispatch: 8.2ms avg
{
  "event_id": "evt_attest_908a8e3f",
  "timestamp": "2025-05-18T14:32:01.890Z",
  "subject": "sre-lead@nexuscore.internal",
  "device": {
    "uuid": "dev-sec-node-4019",
    "hardware_tpm": true,
    "pcr_validation": "MATCH_BASELINE",
    "disk_encryption": "XTS-AES-256-ENFORCED",
    "posture_score": 98.4
  },
  "idp_action": "EXTEND_SESSION_5M",
  "siem_severity": "INFORMATIONAL",
  "signature": "ecdsa-sha256-MEYCIQDx9..."
}
Standard Connectors
1-Click Deploy

Pre-built recipes for Terraform, CloudFormation, and Helm charts.

Telemetry Throughput
1.2B+ Events / Day

Fault-tolerant distributed buffer with zero message loss guarantee.

Browse complete 280+ connector catalog β†’
πŸ“Š Executive & Continuous Compliance Radar

Auditing & Framework Adherence.
Always Audit-Ready, Never Approximated.

Eliminate panic before annual reviews. NexusCore generates verifiable, timestamped cryptographic proof of compliance against NIST 800-207 Zero Trust Architecture, CIS Benchmarks, and SOC 2 Type II controls in real time.

πŸ›‘οΈ Compliance Command Center Prod Tenant: global-corp-us-east
Live Attestation Ledger
NIST SP 800-207 99.2% PASS
Zero Trust Architecture

Continuous Policy Enforcement Point (PEP) and Policy Decision Point (PDP) verification.

7 Core Tenets Attested 0 Breached
CIS CONTROLS V8 96.8% PASS
Endpoint Hardening

macOS, Windows 11 & Linux distribution configuration baselines checked against Level 1/2.

4,120 / 4,250 Checks 130 Minor Drift
AICPA SOC 2 TYPE II 100% READY
Trust Services Criteria

Continuous access control evidence logging with tamper-proof immutable audit chains.

CC6.1 - CC6.8 Controls Zero Auditor Findings

πŸ’» Fleet Posture by OS Platform

Total Monitored: 3,420 Devices
🍎
macOS Sonoma / Sequoia
Secure Enclave + FileVault Enforced
1,940 Endpoints 99.8% Healthy
πŸͺŸ
Windows 11 Enterprise (23H2)
TPM 2.0 + VBS Core Isolation
1,250 Endpoints 98.1% Healthy
🐧
Ubuntu 24.04 / RHEL 9 (eBPF Probes)
dm-crypt LUKS + Measured Kernel
230 Endpoints 94.2% (12 Drift)

⚠️ Recent Policy Remediation Events

Auto-Healed
EDR Sensor Unresponsive 2m ago
Host: node-dev-8812 β€’ macOS
Action: Access immediately downgraded to Read-Only VLAN.
FileVault Encryption Paused 14m ago
Host: dev-mbp-3011 β€’ macOS
Action: Jamf auto-policy triggered; re-attested PASS in 45s.
Mean Time to Remediate (MTTR): 1.8 Minutes
πŸ“œ
Cryptographically Signed Audit Receipts
Every evaluation transaction is hashed with SHA-256 and committed to an append-only verifiable log.
Generate SOC 2 Auditor Pack
πŸ“š Architectural Knowledge Base

Engineering Resources & Playbooks.
From Architecture to Production Rollout.

Curated technical blueprints, cryptographic attestation whitepapers, enterprise hardening runbooks, and SDK documentation for SecOps, SRE, and platform security engineers.

πŸ“„ PDF β€’ 38 Pages

Hardware Root of Trust & PCR Attestation

An in-depth cryptographic treatise on TPM 2.0 endorsement key chains, Measured Boot verification, and replay attack prevention.

β–Ή NIST SP 800-155 Alignment
β–Ή Remote Nonce Validation Math
Read Technical Whitepaper β†’
πŸ—ΊοΈ Interactive Guide

Enterprise Zero Trust Rollout Framework

A battle-tested, 4-phase enterprise roadmap for migrating 10,000+ endpoints from perimeter VPNs to continuous posture-based ZTNA.

β–Ή Phase 1: Shadow Audit Mode
β–Ή Zero User Friction Escalation
Access Migration Matrix β†’
πŸ›‘οΈ Ansible / Munki

CIS Level 2 Hardening Runbooks

Automated remediation scripts and configuration profiles for macOS Sequoia, Windows 11 Enterprise, and Red Hat Enterprise Linux 9.

β–Ή BitLocker / FileVault Enforcement
β–Ή Firewall & mDNS Lockdown
Clone GitHub Runbooks β†’
⚑ OpenAPI 3.1 & gRPC

Developer API & SDK Suite

Complete API reference for querying real-time posture states, issuing ephemeral access tokens, and streaming posture mutations into SIEMs.

β–Ή Go, Python, TypeScript SDKs
β–Ή Sub-20ms Evaluation Endpoint
Explore API Docs β†’
SDK Quickstart

Evaluate Endpoint Posture Programmatically

curl / bash Go SDK Node / TS
// Import NexusCore Zero Trust client
import { NexusTrustClient } from '@nexuscore/trust-engine';

const client = new NexusTrustClient({ apiKey: process.env.NEXUS_KEY });

// Interrogate target workstation state before routing high-privilege RPC
const assessment = await client.endpoints.evaluatePosture({
deviceId: "dev-sec-node-4019",
requiredLevel: "HARDWARE_TPM2_SECURE_ENCLAVE",
maxAgeSeconds: 30
});

if (assessment.isTrusted && assessment.riskScore < 20) {
console.log(`Access approved with short lease token: ${assessment.ephemeralToken}`);
}
Zero-Install Cloud Sandbox

Ready to Audit Your Fleet?
Launch an Ephemeral Posture Sandbox.

Experience complete Zero Trust device attestation with zero disruption. Spin up an isolated multi-OS tenant pre-populated with simulated macOS, Windows 11, and Linux workloads in 60 seconds.

βœ“ No agents or MDM profiles required
βœ“ Pre-loaded with NIST 800-207 baselines
βœ“ Live synthetic EDR exploit triggers
βœ“ Instant SOC 2 readiness export
🏒 Trusted by security architects across 140+ Fortune 500 enterprises
Instant Setup

Launch 14-Day Sandbox Tenant

πŸ”’ No credit card required. SOC 2 Type II NDA enforced.