M&A security due diligence is an exercise in verifying reality under a signing deadline. Deal teams investigating an acquisition target face the same structural blind spot on every transaction: the data room contains only what the seller knows about and chose to disclose.
The problem
Standard technical due diligence leans heavily on management questionnaires, compliance certificates, and self-reported asset inventories. Those documents rarely include the staging GraphQL gateway stood up two years ago, the apex domains inherited from a prior acquisition, the over-privileged service accounts in CI/CD, or the multi-tenant isolation shortcuts taken to hit a launch date.
When an acquirer connects a target's network and identity provider after close, those undocumented surfaces become the acquirer's exposure. Deal teams do not need a compliance checklist repackaged into a slide deck. They need an adversary's outside-in view of the target, fast enough to inform price, warranties, and pre-close conditions.
How we run technical diligence
We pair security researchers with parallel reconnaissance and graph intelligence so the assessment starts from observable reality rather than seller questionnaires:
- Outside-in attack surface discovery enumerates seed root domains, reverse-DMARC clusters, certificate transparency streams, passive DNS history, client JavaScript bundles, and exposed source maps to map what is actually reachable on the internet.
- Corporate and asset control-chain mapping traces entity ownership, subsidiaries, regulatory filings, and historical infrastructure footprints so forgotten brand or subsidiary assets are included in scope.
- Architecture, code, and identity inspection focuses data-room time on the boundaries that carry material risk: authentication and tenant isolation, cloud IAM and secret management, CI/CD supply chain, and any AI or agent systems holding production credentials.
Every finding is tied to reproducible evidence, including certificate lineage, passive DNS records, schema dumps, or code call-sites, and rated by its materiality to the transaction.
The outcome
Instead of waiting weeks for a generic questionnaire readout, deal teams get an evidence-backed picture of the target's external and internal posture within the signing window.
Issues are separated cleanly into three buckets: pre-close conditions precedent, items that affect valuation or indemnity language, and a costed 30/60/90-day engineering roadmap for post-close integration.