From SBOMs To Decisions: Prioritizing Supply Chain Risk in Time-Bound M&A... Prashanth Chandrasekar

Why It Matters

Supply‑chain vulnerabilities can shift deal economics or collapse transactions; embedding validated SBOM analysis into M&A due diligence provides buyers quantifiable risk metrics and clear remediation roadmaps.

Key Takeaways

• M&A code reviews must operate under tight time constraints.
• SBOMs alone lack context; need risk scoring and prioritization.
• Actionable outcomes categorize findings as accept, gate, price, or abort.
• Validation of SBOM accuracy is critical to avoid false positives.
• Open-source tools (Guac, Sigstore) enrich evidence for faster deals.

Summary

The presentation by Prashanth Chandrasekar of Bitsight focuses on how software bill of materials (SBOMs) can be transformed from a static inventory into a decision‑making tool for mergers and acquisitions (M&A). He stresses that M&A due diligence operates under a compressed timeline—often weeks—and with limited access to source code or developers, making traditional AppSec processes impractical.

To bridge that gap, the assessment team first generates an SBOM, then validates its completeness, and finally scores each component based on license risk, known CVEs, business criticality, and remediation feasibility. The resulting scores are bucketed into four possible outcomes: accept (post‑close fix), gate (pre‑close covenant), price adjustment, or deal termination.

Chandrasekar illustrates the approach with concrete examples: a small snippet of unlicensed code that must be replaced before close; a transitive vulnerability in Apache Tika’s Commons Compress library whose exposure determines whether it is a gate or a track‑later item; and a critical backdoor in XZ‑utils that can halt the transaction entirely. He also warns against making legal conclusions in the report, leaving that to buyer counsel.

The takeaway for acquirers is that SBOMs alone are insufficient; they must be enriched with context, validated, and linked to actionable remediation plans. Open‑source projects such as Guac, Salsa, and Sigstore can automate parts of this workflow, accelerating the evidence stack and reducing deal risk. Ultimately, integrating supply‑chain risk assessment into M&A decisions protects both the financial and security posture of the combined entity.

Original Description

From SBOMs To Decisions: Prioritizing Supply Chain Risk in Time-Bound M&A Reviews - Prashanth Chandrasekar, Bitsea US, Inc.

Software supply chain risk assessments increasingly rely on Software Bill of Materials (SBOMs), yet their practical value is often tested under severe time constraints. In Mergers and Acquisitions (M&A) due diligence, Application Security (AppSec) teams are frequently required to assess large codebases and their third-party dependencies within days or weeks, where the goal is informed risk visibility rather than exhaustive remediation.

This talk presents a practitioner’s perspective on using SBOMs to prioritize software supply chain risk under tight M&A timelines. Drawing from real-world due-diligence engagements, it explores how AppSec teams analyze SBOMs to identify high-impact dependencies, assess transitive risk, and correlate vulnerability intelligence with open-source license obligations that may influence post-acquisition risk.

The session also addresses common challenges such as incomplete SBOMs, noisy vulnerability data, unclear license declarations, and limited exploit or usage context. The emphasis is on practical, risk-based prioritization techniques and legal-safe framing of findings.

Attendees will leave with practical guidance on using SBOMs as a decision-support mechanism, rather than just as compliance artifacts.