Introducing M&A Due Diligence

Why We Built This

If you've ever been the CISO on an acquisition, you know the drill. The deal team hands you a data room full of policies, a tight timeline, and the expectation that you'll assess the target's entire security posture before the board meets. Your tools are Excel, email, and maybe a shared drive nobody can find later.

There's no structured way to run a cybersecurity due diligence assessment. No standard framework for evaluating what you're actually acquiring: the controls, the policies, the tech stack, the software supply chain, the third-party relationships that become yours at close. Every deal starts from scratch. Every CISO builds their own process from duct tape and domain expertise.

The M&A module in 3PRM exists because we've been that CISO. We've sat on both sides of the table, as both acquirer and target, and built the tool we wished existed. Not a generic GRC platform repurposed for M&A. A purpose-built due diligence system that covers the full deal lifecycle and produces the artifacts your board and investment committee actually need.

The Full Deal Lifecycle

Most M&A security assessments are treated as a one-time event: evaluate the target, write a report, move on. But cybersecurity due diligence doesn't end when the deal closes. It extends through integration, remediation, and the eventual harmonization of two security programs into one.

3PRM's M&A module tracks a deal through four phases, with exit paths for deals that don't proceed:

Each phase transition is deliberate. A two-step confirmation modal prompts you to export a PDF report before advancing, because the findings from each phase become the baseline for the next. Phase timelines are frozen on transition so you always have an accurate record of when each stage was completed.

Deals can also be reactivated. An "On Hold" deal can resume where it left off. A "Fell Through" deal preserves its findings in case the acquisition resurfaces later, which, in our experience, happens more often than people expect.

What's Inside a Deal

Each deal in the M&A module is a self-contained workspace with roughly 10 tabs covering every dimension of cybersecurity due diligence. Here's what each one does:

DD Assessment

A structured, control-by-control security assessment mapped to the frameworks that matter in an M&A context. Each control gets a maturity rating, evidence notes, and gap descriptions. AI-powered analysis grades the responses automatically, generates a composite score, and surfaces the specific areas that need attention before close.

The module supports multiple assessment frameworks:

Assessments can be shared externally with the target company's security team, allowing them to complete responses directly in the platform rather than through email and spreadsheets.

Policy Comparison Matrix

A side-by-side comparison of the target's security policies against your own across 23 policy areas. The AI analyzes both sides and identifies alignment gaps, missing policies, and critical areas that will require harmonization before or after close. Each gap is classified by priority. Some are deal-breakers, some are integration tasks, and some are acceptable as-is.

Technology & Cost Analysis

A complete inventory of the target's technology stack, covering every tool, platform, and service they run. The module identifies overlaps with your existing stack and calculates consolidation savings versus integration costs. This gives the investment committee actual numbers for the technology integration line item, not estimates.

SBOM Analysis

Upload a Software Bill of Materials in CycloneDX or SPDX format and get instant vulnerability analysis. The module ingests every component, enriches it against the OSV vulnerability database for CVE data, classifies license risk, and generates a severity breakdown. AI-powered findings summarize the key risks so you can assess whether the target's software supply chain is a liability.

Personnel Roster

Track key security and IT personnel at the target company: who they are, what they own, and which are critical to retain. In an acquisition, losing the CISO or the lead security engineer in the first 90 days can undo months of integration planning. The roster makes retention risk visible.

Inherited Vendor Risk

The target's third-party relationships don't disappear at close. They become yours. This tab maps every inherited vendor with criticality ratings, contract values, and disposition decisions: retain, consolidate with an existing vendor in your portfolio, or flag for review. It's the bridge between M&A due diligence and TPRM, because those inherited vendors will need to be onboarded into your ongoing vendor risk program.

Findings Management

A dedicated findings tracker that captures every risk issue, compliance gap, and remediation item discovered during the deal. Findings can be linked to specific assessment controls, documents, or SBOM vulnerabilities. Each finding has a severity, status, owner, and remediation timeline. They persist across phase transitions, so a finding opened during Due Diligence can be tracked through Pre-Close negotiation and into Integration remediation.

The M&A Scoring Model

The M&A module has its own composite scoring model, distinct from the TPRM unified risk score. While the TPRM model uses Assessment + External Posture + Document Compliance, the M&A model is designed around the data that's actually available during a due diligence process:

The reasoning is different from TPRM. In a due diligence context, you typically don't have continuous external monitoring data for the target because they're not in your vendor portfolio yet. What you do have is the assessment, their policy documentation, and (if they provide it) their SBOM. The model is built around the evidence that's actually available during a deal.

Like the TPRM model, weights are configurable per organization and stored in the database. The same shared scoring engine powers both the in-app display and the PDF reports, ensuring consistency across every surface.

Board-Ready Reporting

Everything in the M&A module is designed to produce one artifact: the DD Intelligence Report. This is the document your CISO hands to the board, the investment committee, or the deal team. It's generated as a PDF with a single click and includes:

• Composite DD score with letter grade and weighted component breakdown
• Executive summary synthesized from assessment findings, policy gaps, and SBOM analysis
• Assessment results by domain with control-level ratings and gap details
• Policy comparison summary with alignment status across all 23 areas
• Technology overlap analysis with consolidation savings estimates
• SBOM risk summary with vulnerability severity breakdown and license risk flags
• Findings detail with severity, status, remediation timelines, and owner assignments

The report uses the same shared scoring engine as the in-app display, so the numbers in the PDF always match what you see on screen. Every component score, every weight, every rollup, all computed by the same code path.

What This Changes

Before 3PRM's M&A module, cybersecurity due diligence meant building a custom process for every deal. A CISO would cobble together a questionnaire in a spreadsheet, manually review policy documents, ask for a SBOM and try to parse it with command-line tools, and then write a report in PowerPoint or Word that would be outdated by the time the board read it.

The M&A module replaces all of that with a structured, repeatable process. The assessment is standardized but flexible. The policy comparison is automated. The SBOM analysis is instant. The technology cost analysis produces real numbers. The findings persist across deal phases. And the report generates itself from the data you've already entered.

The result is that you can run a comprehensive cybersecurity due diligence assessment in days instead of weeks, with a deliverable that's defensible, auditable, and consistent across every deal your organization evaluates.

If you've been on the other side of the table as the target being assessed, the experience is better too. Instead of receiving a 200-row spreadsheet questionnaire via email and being told to return it in 48 hours, you get a structured assessment in a platform where you can respond to specific controls, attach evidence, and see what the acquirer is actually evaluating. It's the difference between an interrogation and a collaboration.

Available Now

The M&A Due Diligence module is live on the platform. It's available as a separate module that can be enabled alongside or independently of the TPRM module. Some organizations need M&A capabilities without running an ongoing vendor risk program, and some need both.

If you're evaluating an acquisition and want to see how structured cybersecurity due diligence actually works, we'd love to show you.