The External Attack Surface of Mergers and Acquisitions

An acquisition adds more than people, products, and revenue. It adds an attack surface.

Before integration begins, the acquired organization may have domains, subdomains, cloud accounts, certificates, exposed services, vendors, and identity systems that are unfamiliar to the buyer. After integration, those gaps can become shared risk.

Traditional due diligence needs an outside-in complement. Map public assets associated with the target, identify unknown or unowned services, assess high-risk internet exposure, and establish remediation ownership before the first major integration milestone.

This does not replace legal, financial, or technical diligence. It gives those processes a continuously updated view of what the internet can already observe.

The deal closes on a date. The inherited exposure arrives immediately.

TUT1 helps security teams map an organization’s external attack surface during M&A due diligence and turn discovered exposure into an integration-ready remediation plan.