A merger is the combination of two companies into one corporate structure. In cybersecurity, mergers matter because they force two sets of users, networks, cloud accounts, applications, vendors, and policies to coexist under one management model. Until systems are consolidated, attackers can exploit duplicated identities, inconsistent passwords, weak admin rights, or poorly tracked assets.
Security teams treat a merger as an integration project and a control test. They map data flows, review privileged access, compare logging and incident response procedures, and decide which tools or domains remain trusted. Real-world risk often comes from ordinary mistakes: orphaned accounts, overlapping third-party access, and incompatible security standards. A well-managed merger reduces that exposure by making ownership, access, and accountability clear before consolidation goes too far.