1. What MA-S2 Is and Why Palantir Proposed It
MA-S2 stands for Mission Assurance Security Standard. Palantir published version 1.0 in May 2026 and explicitly invited the broader security community to review, challenge, and contribute to it. It is open not proprietary.
"Cyber-tuned LLMs are increasingly capable of finding novel vulnerabilities... our adversaries are increasingly capable of wielding them."
Shyam Sankar, CTO, Palantir TechnologiesThat quote is the entire reason MA-S2 exists. For decades, the security industry operated on the assumption that finding vulnerabilities was slow, expensive, and required rare human expertise. Defenders could reasonably patch faster than attackers could discover.
That assumption is now broken. AI agents can scan codebases, model attack chains, and discover zero-day class vulnerabilities at a scale and speed no human team can match. The adversary's capability jumped. The defense frameworks did not.
MA-S2 is Palantir's answer: a security standard built specifically for the AI-threat era, requiring continuous AI-augmented defenses rather than periodic manual assessments.
MA-S2 does not replace SOC 2, FedRAMP, or NIST SP 800-53. It complements them. Palantir explicitly positions it as filling the gap between what existing frameworks require and what the current threat landscape actually demands.
2. The Four Control Domains Explained
MA-S2 is structured around four control domains. Each domain addresses a specific failure mode that traditional security programs leave undefended.
Continuous, AI-Augmented Vulnerability Scanning (CVS)
CVS-0.1 through CVS-0.5Traditional vulnerability scanning runs on a schedule weekly, monthly, or before a compliance audit. MA-S2 requires it to run continuously, on every release artifact, before deployment. More importantly, it requires AI-integrated tooling capable of discovering zero-day class vulnerabilities, not just known CVEs.
What you must have:
- Automated scanning of all release artifacts before deployment
- CVSS v3.x scoring supplemented by EPSS (exploit prediction) and CISA KEV catalog cross-reference
- AI-assisted tooling for zero-day class vulnerability discovery
- Automatic detection, interim mitigation, and fleet-wide recall for Critical/High findings
- Remediation SLAs tied to exploitability context, with platform telemetry proving adherence
Attack Path Modeling and AI-Assisted Adversarial Simulation (APM)
APM-1.1 through APM-1.4This is the domain that separates MA-S2 from every other framework. It does not ask whether you have vulnerabilities it asks whether an attacker can chain them into a real exploit path. A CVSS 4.0 finding buried in an internal service means nothing if it is reachable from your public API through two trust-boundary hops.
APM requires multi-stage attack path modeling across your full architecture, with AI-assisted adversarial simulation that demonstrates real vulnerability chaining not just isolated finding reports. It also requires integration of nation-state tactics from MITRE ATT&CK.
What you must have:
- Multi-stage attack path modeling across your full architecture
- AI-assisted adversarial testing demonstrating actual vulnerability chaining
- Contextual triage that deprioritizes vulnerabilities that are genuinely unreachable
- Threat intelligence feeds aligned to MITRE ATT&CK nation-state TTPs
Real-Time Software Inventory and Domain Awareness (INV)
INV-2.1 through INV-2.5You cannot defend what you cannot see. INV requires machine-readable Software Bills of Materials (SBOMs) with exact version pinning, continuously reconciled against what is actually running in production. If your declared components diverge from your runtime components, MA-S2 requires automated alerts.
What you must have:
- Machine-readable SBOMs in SPDX or CycloneDX format with exact version pinning
- Continuous runtime reconciliation with automated drift alerts
- API-accessible environment-level deployment visibility
- Upstream supply chain visibility and security attestation from vendors
- Coverage for air-gapped and disconnected environments
Autonomous Remediation Orchestration (ARO)
ARO-3.1 through ARO-3.6Finding vulnerabilities is not enough. MA-S2 requires the ability to act on them at fleet scale without downtime. ARO mandates automated patch deployment with tested rollback capability, orchestrated from a single control plane across all environments - including on-premises and air-gapped deployments.
What you must have:
- Zero-downtime automated patch deployment with tested rollback capability
- Fleet-wide orchestration from a single control plane across all environments
- Compliance-aware change management respecting environment-specific constraints
- Formal vulnerability suppression mechanism with audit trails and auto-expiration
- Regular reporting on MTTR, SLA compliance, and deployment coverage
3. Who Is Affected
MA-S2 is positioned for mission-critical software across all deployment models: public cloud, private cloud, on-premises, and air-gapped environments. In practical terms, that means any software vendor whose product is used in:
- Defense and government. If you sell to federal agencies, DoD contractors, or any organization with FedRAMP, DISA IL5/IL6, or CMMC requirements, MA-S2 is directly relevant. Palantir is a primary DoD vendor MA-S2 will propagate through their supply chain.
- Healthcare SaaS. Healthcare systems handling PHI are mission-critical. As MA-S2 gains adoption, HIPAA-covered entities and their vendors will face MA-S2 requirements in enterprise security questionnaires.
- Financial infrastructure. Banks, payment processors, and fintech platforms running on infrastructure that overlaps with government or defense contracts will see MA-S2 referenced in their vendor audits.
- Enterprise SaaS selling upmarket. Enterprise security questionnaires track what procurement teams at large organizations require. When Palantir's procurement team requires MA-S2 attestation from vendors, those requirements spread downstream.
- AI and LLM product companies. MA-S2 was written explicitly for the AI-threat era. If you build AI products, your buyers are already thinking about AI-augmented attacks. MA-S2 gives them a framework to require defenses against those attacks.
MA-S2 will appear in vendor security questionnaires within 12–18 months of publication. Companies that understand and can attest to MA-S2 compliance will close deals that competitors lose. This is the same dynamic that played out with SOC 2 in 2018–2020 early movers won deals by having the report. Late movers lost deals explaining why they didn't.
4. How MA-S2 Compares to SOC 2, FedRAMP, and ISO 27001
| Framework | What It Covers | What MA-S2 Adds |
|---|---|---|
| SOC 2 Type II | General security controls, operational effectiveness over a period | AI-augmented scanning, attack path modeling, and autonomous remediation none of which SOC 2 requires |
| FedRAMP | NIST SP 800-53 controls for federal cloud services | Continuous AI-assisted adversarial simulation and SBOM runtime reconciliation beyond FedRAMP's static control set |
| ISO 27001 | Information security management system (ISMS) design and operation | Specific technical implementation requirements for AI-era threats that ISO 27001's risk-management approach does not prescribe |
| NIST SP 800-53 | Comprehensive control catalog for federal information systems | Attack path modeling with AI-assisted chaining and exploit-context-aware remediation SLAs not present in 800-53 |
| CMMC Level 2 | Implementation of NIST SP 800-171 for DoD contractors handling CUI | AI-augmented scanning and adversarial simulation beyond CMMC's requirement set |
The critical point: having SOC 2 Type II, FedRAMP, or ISO 27001 does not mean you meet MA-S2. MA-S2 targets the specific gap between what legacy frameworks verify and what the current AI threat landscape demands. You can be fully SOC 2 compliant and fail every MA-S2 control domain.
5. How to Meet MA-S2 Requirements
Breaking it down by domain with actionable steps:
Meeting CVS (Continuous Vulnerability Scanning)
Shift your vulnerability scanning left. This means integrating scanning into your CI/CD pipeline not running it quarterly or pre-audit. Tools like Grype, Trivy, or Snyk cover SBOM-based scanning; pair these with EPSS scoring (available via FIRST.org API) to contextualize severity with exploit probability. CISA's KEV catalog cross-reference is available via their API and should be automated into your triage workflow.
The "AI-assisted tooling for zero-day class vulnerabilities" requirement is the hardest part to meet with off-the-shelf tools. This is where independent security assessments that use adversarial AI simulation become necessary you cannot buy a checkbox product for this.
Meeting APM (Attack Path Modeling) The Hardest Domain
This is where most organizations will need external help. Attack path modeling requires understanding your full architecture not just what your scanners can see, but how an attacker moves between systems, escalates privileges, crosses trust boundaries, and reaches your crown jewels.
MA-S2 explicitly requires this to include AI-assisted adversarial simulation, not just manual pentesting. The tester must demonstrate actual vulnerability chaining showing that a combination of low-severity findings creates a critical real-world exploit path. A standard CVSS-sorted finding report does not satisfy APM.
Meeting INV (Software Inventory)
Generate SBOMs as part of your build process tools like Syft (for containers) and CycloneDX Maven/Gradle plugins automate this. The harder requirement is continuous runtime reconciliation: comparing what your SBOM declares to what is actually running. Tools like Anchore Enterprise or Dependency-Track provide this monitoring layer.
Meeting ARO (Autonomous Remediation)
Fleet-wide patch orchestration requires investment in your deployment infrastructure. If you are on Kubernetes, tools like Renovate Bot or Dependabot handle dependency updates with rollback support. For OS-level patching across fleet, solutions like AWS Systems Manager Patch Manager or Chef InSpec provide the control plane MA-S2 requires. The audit trail requirement documented suppression decisions with auto-expiration - needs to be built into your change management workflow explicitly.
6. Attestation: What Evidence You Need
MA-S2 explicitly states that self-attestation without supporting evidence is unacceptable. This is a harder requirement than it sounds. It means you cannot fill out a questionnaire saying "yes, we do attack path modeling" without documentation to back it.
Acceptable evidence forms include:
- Third-party audit reports. An independent assessor reviews your controls and produces a written attestation. This is the gold standard and the evidence form most enterprise procurement teams will require.
- Platform-generated telemetry. Automated data from your scanning and remediation tools showing real-time compliance with SLAs, scan coverage, and MTTR metrics.
- Architecture documentation reviewed by qualified assessors. Attack path models, architecture diagrams, and trust boundary maps reviewed and signed off by an independent security reviewer.
- Contractual SLA commitments with defined measurement methodologies. Documented service-level agreements specifying remediation timeframes, tied to exploitability scoring, with clear methods for measuring adherence.
MA-S2 also provides seven minimum questions organizations should require vendors to answer in procurement. If you are a buyer evaluating vendors, these cover: scanning processes, vulnerability classification methods, inventory capabilities, adversarial simulation evidence, patch orchestration architecture, remediation responsibility allocation, and air-gapped environment handling.
7. How NullStrike Security Helps You Meet MA-S2
Of MA-S2's four control domains, Control Domain 1 Attack Path Modeling and AI-Assisted Adversarial Simulation is the one that no tool or automated platform can satisfy alone. It requires human security expertise operating with an adversarial mindset, supported by AI-assisted techniques, producing evidence that an independent assessor has validated.
This is exactly what NullStrike does.
NullStrike Security: MA-S2 APM Compliance
NullStrike's core methodology is attack path validation finding how low-severity findings chain together into real exploitable paths across your full architecture. We do not deliver CVSS-sorted finding lists. We deliver attack narrative: here is how an adversary moves from your public-facing API to your database server in three steps using findings your scanner already flagged as medium severity.
That methodology maps directly to what MA-S2 APM requires. Our engagements include:
- Multi-stage attack path modeling across your full architecture cloud, on-premises, hybrid.
- AI-assisted adversarial simulation demonstrating real vulnerability chaining across trust boundaries.
- MITRE ATT&CK aligned reporting mapping findings to nation-state TTPs as required by APM-1.4.
- Contextual triage explicitly identifying unreachable findings versus exploitable paths giving your team a prioritized remediation roadmap, not a 200-item scanner dump.
- Independent attestation report suitable for MA-S2 procurement questionnaires no self-attestation, third-party verified.
Beyond APM, NullStrike supports the CVS domain through our pre-assessment SBOM review and vulnerability contextualization, and we produce architecture documentation that satisfies the INV domain's assessor-reviewed requirement.
What the Engagement Looks Like
A typical MA-S2 APM engagement with NullStrike runs 2–3 weeks and produces:
- Architecture review and trust boundary mapping across your full stack
- AI-assisted adversarial simulation identifying vulnerability chains not isolated findings
- Attack path narrative report with MITRE ATT&CK TTP mapping
- Prioritized remediation roadmap ordered by actual exploitability, not CVSS score
- Retest attestation letter confirming critical and high-severity path closures
- MA-S2 APM attestation report for use in vendor questionnaires and procurement processes
MA-S2 and Your Existing Compliance Stack
If you are already pursuing SOC 2 Type II, ISO 27001, or FedRAMP, our MA-S2 engagement is structured to satisfy both. The attack path report we produce for MA-S2 APM also covers the penetration testing evidence required by SOC 2 CC6.1, CC6.6, and CC7.1, ISO 27001 Annex A.12.6, and NIST SP 800-53 CA-8. One engagement, multiple frameworks evidenced.
MA-S2 is not yet mandatory. It will be. The companies that build attack path modeling into their security programs now will win enterprise contracts, pass vendor questionnaires, and demonstrate the kind of security maturity that closes deals. The companies that wait will spend 2027 explaining why they don't have it yet.
Ready to Meet MA-S2 APM Requirements?
NullStrike's attack path validation engagements are built for exactly what MA-S2 Control Domain 1 requires. Independent assessment, adversarial simulation, MITRE ATT&CK mapping audit-ready in 2–3 weeks.