CISO Tribune

Vendor comparison · 2 companies

D3 Security vs VulnCheck

D3 Security sells Morpheus, an agentic SOC platform. VulnCheck sells a Cyber Threat Intelligence platform that provides exploit and vulnerability intelligence for prioritizing and remediating vulnerabilities. CISO Tribune files both under Vulnerability management. This page sets the two records side by side: what each sells, where it is based, who owns and funds it, the customers it names and its recent news, each fact numbered to its source.

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  • D3 Security
  • VulnCheck
D3 Security vs VulnCheck: Products, Customers and Funding Compared
D3 SecurityD3 Security sells Morpheus, an agentic SOC platform.d3security.comVulnCheckVulnCheck sells a Cyber Threat Intelligence platform that provides exploit and vulnerability intelligence for prioritizing and remediating vulnerabilities.vulncheck.com
What it sells
  • Morpheus[1][3][4][5][6][9][10]An agentic SOC platform that triages, investigates and orchestrates governed response on every alert.
  • Smart SOAR[2][7][8]Security automation and orchestration that connects tools through REST API and vendor-agnostic integrations and automates workflows without coding.
  • Attack Path Discovery[1][3][5][9]D3 Security's investigation engine, which traces every alert across identities, endpoints, cloud and email infrastructure.
  • Adaptive Tasking[5]A conversational copilot inside every Morpheus case.
  • Verified Verdicts[3]Grades every finding Confirmed, Inferred, or Gap, with evidence attached.
  • Exploit & Vulnerability Intelligence[1][4][5][10][11][15]Early access to new vulnerability information not found in the NVD, with dozens of unique fields.
  • Initial Access Intelligence[1][5][8]In-house developed exploit PoCs, packet captures and Suricata signatures for initial access vulnerabilities.
  • VulnCheck for Government[16]Features, functionality and data available only to Government partners.
Categories
Headquarters
Not stated on its pagesLexington, United States[3]
Founded
Not stated on its pagesNot stated on its pages
Ownership and funding
Privately held[2]Privately held[2]
Named customers
Not stated on its pagesNot stated on its pages
Recent news
Not stated on its pages
  • February 17, 2026VulnCheck announced it raised $25 million in new funding to scale its growth and expand its intelligence capabilities.[19]
  • February 17, 2026VulnCheck announced a $25 million Series B round led by Sorenson Capital, with National Grid Partners and existing investors also taking part.[12]
  • February 17, 2026Axios reported that VulnCheck raised a $25 million Series B round led by Sorenson Capital.[14]
  • December 8, 2025VulnCheck announced two executive hires: Mike Price as Vice President of Product & Engineering and Jon Loehr as Vice President of Finance.[13]
G2 and Gartner Peer Insights
  • G2: Not stated on its pages
  • Gartner Peer Insights: Not stated on its pages
  • G2: Not stated on its pages
  • Gartner Peer Insights: Not stated on its pages
Who it fits
From its own pages, D3 Security builds Morpheus for the SOCs of large enterprises and for the largest MSSPs. D3 Security describes Morpheus as a multi-tenant platform for MSSPs and MDR providers. D3 Security describes banks and major financial organizations as users of Morpheus for alert investigation and case records. D3 Security describes healthcare teams as facing high impact threats like ransomware and data theft, and agencies as facing large attack surfaces, legacy systems and constrained staffing. For deployment, client tenants can sit in Azure regions in the US, Canada, Ireland and Japan, on-premises, or air-gapped.Not written yet
Last verified
November 2, 2026November 2, 2026

Where they overlap

  • D3 Security and VulnCheck are both filed under Vulnerability management.
  • Both are privately held.

Where they differ, field by field

  • D3 Security's primary category is SOAR and security automation; VulnCheck's is Threat intelligence.
  • D3 Security is also filed under AI SOC analysts and Incident response and forensics.
  • D3 Security lists Morpheus, Smart SOAR, Attack Path Discovery, Adaptive Tasking and Verified Verdicts. VulnCheck lists Exploit & Vulnerability Intelligence, Initial Access Intelligence and VulnCheck for Government.
  • VulnCheck is headquartered in Lexington, United States.

What it sells: D3 Security

What Morpheus does[1][3][4][5][6][9][10]
Morpheus triages, investigates and responds across the full alert lifecycle and defers to a human when it is uncertain. Morpheus runs its agentic reasoning under one engine, inside one deterministic playbook, with hard bounds on iteration, cost, tool scope and approval. Morpheus ships its capabilities as one platform with one engine and one audit trail. Morpheus offers four autonomy modes: Deterministic, AI-Assisted, AI-Led and Autonomous.
What Smart SOAR does[2][7][8]
Smart SOAR ingests, normalizes, de-duplicates and correlates event data from any app, stack or environment. Smart SOAR enriches security events with threat intelligence including indicator, actor, digital risk, fraud, industry and service data. Smart SOAR lets teams configure and test integrations and playbooks from a single screen. Smart SOAR provides customized compliance reporting for GDPR, HIPAA and 23 NYCRR 500.
What Attack Path Discovery does[1][3][5][9]
Attack Path Discovery maps blast radius, validates IOCs and drafts remediation before an analyst opens the case. Attack Path Discovery pivots across identities, endpoints, cloud, email and network, builds a reconstructed timeline and identifies blast radius and root cause. Attack Path Discovery operates inside the tenant.
What Adaptive Tasking does[5]
Adaptive Tasking is grounded in the case's evidence and can dispatch agents to gather more intel from any of the 800+ integrations. Every prompt, response and executed action is recorded in the same audit trail as the rest of the case.
What Verified Verdicts does[3]
Verified Verdicts keeps the reasoning for each grade readable and correctable. When Morpheus cannot confirm a finding, Morpheus grades it Gap and hands the alert to an analyst.

What it sells: VulnCheck

What Exploit & Vulnerability Intelligence does[1][4][5][10][11][15]
Exploit & Vulnerability Intelligence is offered for decisions on which vulnerabilities need immediate remediation. It gives early access to new vulnerability information not found in the NVD, along with dozens of unique fields. It includes an exploitation timeline covering when a vulnerability was first disclosed, when evidence of exploitation was first discovered and when it was remediated.
What Initial Access Intelligence does[1][5][8]
VulnCheck develops exploit PoCs, packet captures, and Suricata signatures in house. They are used to defend against initial access vulnerabilities.
What VulnCheck for Government does[16]
VulnCheck for Government includes features, functionality and data. They are available only to VulnCheck's Government partners.

Questions about D3 Security and VulnCheck

What do D3 Security and VulnCheck sell?
D3 Security sells Morpheus, Smart SOAR, Attack Path Discovery, Adaptive Tasking and Verified Verdicts. VulnCheck sells Exploit & Vulnerability Intelligence, Initial Access Intelligence and VulnCheck for Government.
Are D3 Security and VulnCheck in the same category?
They share Vulnerability management. D3 Security's primary category is SOAR and security automation and VulnCheck's is Threat intelligence.
Where are D3 Security and VulnCheck headquartered?
VulnCheck is headquartered in Lexington, United States.
Who owns D3 Security and VulnCheck?
D3 Security is privately held. VulnCheck is privately held.
Who are D3 Security and VulnCheck sold to?
From its own pages, D3 Security builds Morpheus for the SOCs of large enterprises and for the largest MSSPs.
What have D3 Security and VulnCheck announced recently?
February 17, 2026: VulnCheck announced it raised $25 million in new funding to scale its growth and expand its intelligence capabilities.

About D3 Security

D3 Security sells Morpheus, an agentic SOC platform. Morpheus triages, investigates and responds across the full alert lifecycle, with every verdict graded by its evidence and every step on one traceable record. Morpheus defers to a human when it is uncertain. Morpheus includes the AI in its price rather than charging on a meter. D3 Security states that it is independent and profitable, has been in cybersecurity since 2012 and built Morpheus from scratch. D3 Security launched its SOAR in 2014.[1][4]

Morpheus grades every finding by evidence quality: Confirmed, Inferred, or Gap. When Morpheus cannot confirm a finding, Morpheus grades it Gap and hands the alert to an analyst. The Cybersecurity Triage Reasoning Graph classifies each alert, scores confidence and decides whether the alert warrants a full investigation. Attack Path Discovery is D3 Security's investigation engine and traces every alert across identities, endpoints, cloud and email infrastructure. Attack Path Discovery maps blast radius, validates IOCs and drafts remediation before an analyst opens the case. When incident response opens a Morpheus case, the case already carries a verdict, evidence, MITRE mapping and a drafted response plan. Adaptive Tasking is a conversational copilot inside every Morpheus case. Adaptive Tasking is grounded in the case's evidence and can dispatch agents to gather more intel from any of the 800+ integrations. Morpheus vulnerability triage applies the same investigation engine to scanner and AI-discovered findings.[1][5][9]

Morpheus offers four autonomy modes, Deterministic, AI-Assisted, AI-Led and Autonomous, on one engine with one audit trail, chosen per use case and changed by configuration. In one Morpheus mode, Morpheus investigates and proposes, and the analyst approves every state-changing action such as host isolation, account suspension or IP block. Morpheus response actions flow through 800+ self-healing integrations, including host isolation, account suspension, mailbox purge and ticket creation.[5]

Morpheus includes deterministic playbooks, 800+ self-healing integrations, integrated case management and a full audit trail per incident. The deterministic playbook engine in Morpheus offers drag-and-drop authoring, version control, YAML export and GitHub versioning. Morpheus connectors cover SIEM, EDR, IAM, cloud, email security, NDR, threat intel and ITSM platforms. Morpheus monitors every connector across every tenant and generates corrective code autonomously when drift is detected. Morpheus reads the detections a customer already has, investigates across the identity, endpoint, email, network and cloud tools the customer already owns, and writes the result back to the existing system of record where the integration supports it.[4][6]

Case management in Morpheus keeps one incident record across triage, investigation, response and evidence. Morpheus case management includes incident timeline, evidence preservation, custody chain, analyst notes, SLA tracking and regulator-ready exports. Morpheus writes every playbook step, analyst approval, integration call and command outcome to a single audit trail per incident. Morpheus maps its audit trail to SEC Item 1.05, NYDFS 500, HIPAA, NERC CIP, NIS2, DORA and the EU AI Act.[4]

Smart SOAR gives security teams automation and orchestration to offload manual processes, spot real incidents and trigger actions. Smart SOAR connects tools through REST API and vendor-agnostic integrations and automates workflows without coding. Smart SOAR enriches security events with threat intelligence including indicator, actor, digital risk, fraud, industry and service data. Smart SOAR lets teams configure and test integrations and playbooks from a single screen. Analysts opening an alert in Smart SOAR see incident types, playbooks, linked events, IOCs, logs and data from threat intelligence, incident knowledge and MITRE ATT&CK TTPs. Smart SOAR custom dashboards compare metrics such as MTTR, MTTD, number of incidents by type and open and close tickets by analyst against predetermined benchmarks. Smart SOAR provides customized compliance reporting for GDPR, HIPAA and 23 NYCRR 500.[7][8]

D3 Security states that Morpheus is built for Fortune 500 SOCs and the largest MSSPs. Morpheus is a multi-tenant agentic SOC platform for MSSPs and MDR providers. For service providers, Morpheus runs L1 and L2 investigation end to end on every client's alerts, grades every verdict by its evidence and executes response on deterministic playbooks with hard guardrails. In Morpheus, autonomy is set per client and tenant data stays sealed, including from the AI. Morpheus gives each tenant its own data partition, credentials, playbooks and audit trail, and scopes the AI's context to that tenant. Morpheus invokes no AI inference for tenants set to Deterministic. Morpheus tenants can be placed in Azure regions in the US, Canada, Ireland and Japan, on-premises, or air-gapped. Morpheus drafts client-specific playbooks from the client's connected stack and the provider's SOPs, the provider's team reviews and approves them, and a deterministic engine executes what was approved.[9]

Banks and major financial organizations use Morpheus to investigate alerts, build audit ready case records and track cases across cyber, fraud, privacy and corporate security teams. Morpheus runs Tier 1 and Tier 2 investigations across identity, endpoint, email and cloud signals. Morpheus investigates across IT, OT and physical signals and builds case records. Morpheus triages and investigates routine alerts and escalates the cases that need human judgment.[4][5][7][10]

D3 Security on the record

Sources

D3 Security full record

  1. [1]d3security.comD3 Security · d3security.com · undated page, accessed November 2, 2026 · Tier A
  2. [2]About d3 securityD3 Security · d3security.com · undated page, accessed November 2, 2026 · Tier A
  3. [3]Morpheus by D3 Security | The Accountable Agentic SOC PlatformD3 Security · undated page, accessed November 10, 2026 · Tier A
  4. [4]Morpheus AI for SOAR | D3 SecurityD3 Security · undated page, accessed November 10, 2026 · Tier A
  5. [5]AI Incident Response & Orchestration | Morpheus AI SOC Platform | D3 SecurityD3 Security · undated page, accessed November 10, 2026 · Tier A
  6. [6]Morpheus AI Security Integrations | D3 SecurityD3 Security · undated page, accessed November 10, 2026 · Tier A
  7. [7]Security Orchestration, Automation and Response (SOAR) With D3 SOARD3 Security · undated page, accessed November 10, 2026 · Tier A
  8. [8]SOC Optimization with Smart SOAR | D3 SecurityD3 Security · undated page, accessed November 10, 2026 · Tier A
  9. [9]Morpheus for MSSPs and MDR Providers | Every Client's Alert Investigated, Every Tenant Sealed | D3 SecurityD3 Security · undated page, accessed November 10, 2026 · Tier A
  10. [10]Autonomous AI SOC Solutions by Industry | D3 SecurityD3 Security · undated page, accessed November 10, 2026 · Tier A

VulnCheck full record

  1. [1]vulncheck.comVulnCheck · vulncheck.com · undated page, accessed September 27, 2026 · Tier A
  2. [2]Series aVulnCheck · vulncheck.com · published March 18, 2025 · Tier A
  3. [3]PrivacyVulnCheck · vulncheck.com · undated page, accessed September 27, 2026 · Tier A
  4. [4]Introduction - VulnCheck DocsVulnCheck · undated page, accessed October 30, 2026 · Tier A
  5. [5]VulnCheck - Outpace AdversariesVulnCheck · undated page, accessed October 30, 2026 · Tier A
  6. [6]Canary Intelligence - VulnCheck DocsVulnCheck · undated page, accessed October 30, 2026 · Tier A
  7. [7]Target Intelligence - VulnCheck DocsVulnCheck · undated page, accessed October 30, 2026 · Tier A
  8. [8]Initial Access Intelligence - VulnCheck DocsVulnCheck · undated page, accessed October 30, 2026 · Tier A
  9. [9]Query Parameters - VulnCheck DocsVulnCheck · undated page, accessed October 30, 2026 · Tier A
  10. [10]Package Manager Support - VulnCheck DocsVulnCheck · undated page, accessed October 30, 2026 · Tier A
  11. [11]NVD Migration - VulnCheck DocsVulnCheck · undated page, accessed October 30, 2026 · Tier A
  12. [12]VulnCheck Raises $25M Series B Financing to Address Surging Demand for its Exploit Intelligence SolutionsVulnCheck · published February 17, 2026 · Tier A
  13. [13]VulnCheck Announces Strategic Leadership Appointments to Accelerate GrowthVulnCheck · published December 8, 2025 · Tier A
  14. [14]Exclusive: VulnCheck nabs $25M Series B fundingAxios · published February 17, 2026 · Tier B
  15. [15]Exploit & Vulnerability Intelligence | Products | VulnCheckVulnCheck · undated page, accessed November 10, 2026 · Tier A
  16. [16]Products | VulnCheckVulnCheck · undated page, accessed November 10, 2026 · Tier A
  17. [17]Company | VulnCheckVulnCheck · undated page, accessed November 10, 2026 · Tier A
  18. [18]Service Terms | VulnCheckVulnCheck · published April 20, 2026 · Tier A
  19. [19]VulnCheck raises $25M to expand real-time exploit intelligence platformSiliconANGLE · published February 17, 2026 · Tier B

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