The Admin Access Audit Every Growing Business Needs

Most business owners at 50 to 200-person companies cannot produce a complete list of who has admin-level access to their critical systems. Not because the information is hidden, but because nobody has assembled it. Admin accounts get created during initial setup, shared during emergencies, and forgotten after staff transitions. The result is a collection of elevated credentials scattered across your infrastructure with no single inventory, no expiration dates, and no review process.

This is one of the most common findings in security assessments, and it creates real, exploitable risk. When nobody knows who holds the keys, nobody notices when the wrong person uses them.

What Admin Access Sprawl Looks Like

The pattern repeats at nearly every growing SMB we onboard. The specifics vary, but the categories of sprawl are consistent.

Former employees with active accounts. Your IT team disabled the departing employee’s email and laptop, but their admin account in your firewall management console, your hosting provider’s control panel, or your accounting software is still active months later. We covered the full scope of this problem in our post on employee offboarding security gaps. Access revocation that only covers Microsoft 365 leaves dozens of other admin-level accounts untouched.

Shared admin passwords. A single “admin” login gets passed between team members for a vendor portal, a network switch, or a SaaS dashboard that doesn’t support role-based access. The password hasn’t been changed in two years. Four current employees and three former employees know it. Nobody is sure exactly which accounts use it because it was never documented.

Over-provisioned MSP accounts. Your managed IT provider needs access to your systems, but how much? Many MSPs create global admin accounts in Microsoft 365, full-access VPN profiles, and root-level credentials on network devices during onboarding. If you’ve switched providers at any point, the previous provider’s credentials may still be active. Even with your current provider, it’s worth verifying that their access follows the principle of least privilege rather than blanket admin rights across everything.

Personal accounts used for business services. Your domain was registered under the founder’s personal GoDaddy account. Your AWS instance runs under an engineer’s personal email. Your DNS is managed through a personal Cloudflare login. These aren’t edge cases. They’re common at companies that grew fast and never formalized their infrastructure ownership.

Default credentials on network devices. Firewalls, switches, access points, and NAS devices often ship with default admin passwords. At businesses that didn’t have a formal IT setup process, some of those defaults were never changed. Attackers know the default credentials for every major hardware vendor, and they scan for them constantly.

Why This Matters More Than It Used To

Admin access sprawl has always been a risk, but three trends are making it a higher priority in 2026.

Cyber insurance carriers are asking about it directly. If you’ve renewed a cyber insurance policy recently, you’ve seen the questionnaire get longer and more specific. Carriers now routinely ask whether you maintain an inventory of privileged accounts, whether you enforce multi-factor authentication on admin access, and whether you conduct periodic access reviews. Answering “no” to these questions can affect your coverage terms, your premium, or your ability to get coverage at all. We broke down the 12 controls insurers verify most often, and privileged access management is consistently on the list.

Compliance frameworks require it. HIPAA’s Security Rule mandates access controls and periodic access reviews. CMMC Level 2 requires identification and authentication controls for privileged users. PCI DSS 4.0 mandates that all access to system components is restricted based on job function. Even the Texas Data Privacy and Security Act (TDPSA) requires “reasonable” security measures, and access control is among the most fundamental. If your business touches any regulated data, unmanaged admin accounts create compliance gaps that auditors will flag.

Attackers target admin credentials specifically. The 2024 Verizon Data Breach Investigations Report found that stolen credentials were involved in over 40% of breaches. Admin credentials are the highest-value target because a single compromised admin account gives an attacker access to everything that account controls: user data, system configurations, backups, security tools, and the ability to cover their tracks. An attacker who compromises a regular user account can access that user’s files. An attacker who compromises a global admin account can access the entire tenant.

How to Run the Audit

Set aside half a day with your IT lead or managed IT provider. Work through these categories system by system. The goal is a single spreadsheet that lists every admin-level account, who owns it, why it exists, and when it was last reviewed.

Microsoft 365 and Entra ID. Pull the list of users assigned to the Global Administrator, Exchange Administrator, SharePoint Administrator, and Security Administrator roles. Check for accounts that are no longer associated with active employees. Check for service accounts or break-glass accounts that lack MFA. The Microsoft 365 admin center and Entra ID portal both provide role assignment reports.

Firewalls and network devices. Log into your firewall management console (FortiGate, Palo Alto, Meraki, or whatever you run) and review every admin account. Check for default credentials that were never changed. Check for accounts created during initial setup that belong to a former employee or a previous IT provider. Do the same for managed switches, wireless access points, and any network-attached storage.

SaaS applications. Start with the ones that hold sensitive data: your CRM, your accounting software, your HR platform, your file storage, and your project management tools. For each, identify who has admin or owner-level access. SaaS apps are the hardest category to audit because many of them live outside your identity provider and don’t show up in centralized reporting.

Domain registrar, DNS, and hosting. Verify who controls your domain registration (GoDaddy, Namecheap, Cloudflare, etc.), your DNS records, and your web hosting. These are low-frequency, high-impact accounts. You rarely log into them, but losing control of your domain or DNS means losing control of your email, your website, and your ability to receive customer communications.

Banking and financial systems. Review who has admin access to your business banking portal, payroll system, and accounts payable tools. These are the accounts where unauthorized access translates directly to financial loss. Verify that access matches current job responsibilities, not historical ones.

Cloud infrastructure. If you run workloads on Azure, AWS, or Google Cloud, review IAM roles and permissions. Look for overly broad policies, inactive accounts, and access keys that haven’t been rotated. Cloud platforms make it easy to grant permissions and difficult to remember to revoke them.

Fixing What You Find and Keeping It Clean

The audit will almost certainly surface accounts that shouldn’t exist, credentials that should have been rotated, and access that doesn’t match current job functions. Here’s how to address it.

Remove immediately: accounts belonging to former employees, accounts from previous IT providers, default credentials on any device, and any account that nobody can identify an owner for. If you can’t determine why an account exists, disable it. If nothing breaks in 30 days, delete it.

Enforce MFA on every admin account. This is non-negotiable in 2026. Every admin-level login across every system should require multi-factor authentication. If a system doesn’t support MFA natively, evaluate whether it can be put behind your identity provider through SAML or OIDC integration.

Eliminate shared passwords. Every admin account should be assigned to a named individual. If a system only supports a single admin login, use a password manager with audited access so you can see who used the credential and when. Shared credentials that can’t be traced to a specific person are both a security risk and an audit failure.

Apply least privilege. Review whether each admin account actually needs the level of access it has. A person who manages Exchange mailboxes doesn’t need Global Administrator rights. Microsoft 365 offers over a dozen admin roles for a reason. The same principle applies to network devices, SaaS apps, and cloud platforms. Give people the minimum access required for their job, not the maximum because it was easier to set up.

Schedule recurring reviews. A one-time audit is useful but insufficient. Access creeps back to its natural state of sprawl within months as new tools get adopted, new employees get onboarded, and temporary access grants become permanent by default. Set a quarterly cadence for reviewing admin accounts across all critical systems. Your managed security provider can build this into their ongoing service if your internal team doesn’t have the capacity.

The difference between a company that catches an unauthorized admin login and one that discovers it during an incident response investigation is whether anyone was tracking those accounts in the first place. Building the inventory is a few hours of work. Maintaining it is a quarterly habit. The cost of not doing it shows up in insurance claim denials, compliance findings, and breach investigations where the root cause traces back to an account that should have been disabled months ago.