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07/06/2026 9:26 pm
TL;DR: Mergers and acquisitions compress two security cultures into one access model, and StrongDM’s checklist shows why standing privilege, orphaned service accounts, weak monitoring, and slow lifecycle cleanup become immediate breach and compliance risks during integration. Secure access integration now depends on governance speed, not just tooling depth.
NHIMG editorial — based on content published by StrongDM: Merger and Acquisition PAM Checklist for CISOs
By the numbers:
- 80% of identity breaches involved compromised non-human identities such as service accounts and API keys.
- Only 20% have formal processes for offboarding and revoking API keys, and even fewer have procedures for rotating them.
Questions worth separating out
Q: What breaks when privileged access is not reset during a merger or acquisition?
A: Standing access from the acquired environment can survive the deal and give attackers or insiders a ready-made path into sensitive systems.
Q: Why do mergers and acquisitions increase privileged access risk so quickly?
A: M&A combines different identity models, different infrastructures, and different levels of PAM maturity under a single operating timeline.
Q: What do security teams get wrong about PAM during post-merger integration?
A: They often focus on making access work before they make access governable.
Practitioner guidance
- Inventory privileged identities before integration begins Build a complete list of admin accounts, service accounts, secrets, and high-risk roles across both organisations before any trust or federation work starts.
- Re-baseline standing privilege after close Revoke inherited elevation that cannot be tied to an active business need and reissue access only for time-bound tasks.
- Tie JML to transaction-owned records Link joiner-mover-leaver decisions to the post-deal source of truth so leaver access, owner changes, and role shifts are resolved against current business ownership.
What's in the full article
StrongDM's full blog covers the operational detail this post intentionally leaves for the source:
- The day-by-day 7-day M&A PAM checklist for inventorying privileged accounts and critical assets.
- The access brokering approach StrongDM describes for bridging IdP login, protocol-level connections, and ephemeral credentials.
- Case study details showing how provisioning moved from days to minutes across acquired environments.
- The specific logging, SIEM, and audit steps used to support board and regulator reporting.
👉 Read StrongDM's PAM checklist for securing privileged access during M&A →
M&A privileged access integration: what IAM teams need to fix first?
Explore further
08/06/2026 9:24 am
Standing privilege is the core M&A failure mode, not a side effect. This checklist describes a familiar integration pattern, but the real risk is that acquisition work often preserves elevated access long enough for attackers or insiders to exploit it. Standing privilege was designed for stable ownership and predictable administration. That assumption fails during M&A because account ownership, business purpose, and system boundaries are all changing at once. The implication is that post-close access must be treated as temporary until it is re-justified, not inherited as normal.
A few things that frame the scale:
- 80% of identity breaches involved compromised non-human identities such as service accounts and API keys, according to Ultimate Guide to NHIs.
- 91.6% of secrets remain valid five days after the targeted organisation is notified, showing how slowly exposed access can be retired in practice.
A question worth separating out:
Q: How should organisations govern service accounts after an acquisition?
A: They should inventory them separately from human users, identify which ones are still required, and revoke anything that lacks a clear owner or purpose. Service accounts should be brought into the same lifecycle discipline as human access, but with stronger emphasis on ownership, rotation, and removal from dormant systems.
👉 Read our full editorial: M&A privileged access risk exposes the gaps in PAM governance
