MFA Is Enabled. But Does Everyone Still Need the Access They Have?

Multi-factor authentication is often one of the first controls businesses put in place to strengthen identity security. And for good reason: it makes stolen passwords far less useful on their own.

But MFA answers only one part of the access question. It helps verify who is signing in. It does not decide whether that person still needs every permission attached to the account.

We've written before about how identity is one of several areas that shape a business's overall cybersecurity exposure. This article stays with identity, but goes one level deeper — into the part of it that MFA doesn't touch at all: whether the access someone holds still matches what they actually need.

An account can pass every MFA prompt correctly and still carry administrative access from a project that ended long ago. The login is legitimate. The permission may no longer be.

Authentication and Authorization Are Not the Same Control

Authentication confirms identity at the point of login. Authorization determines what that verified identity is allowed to do once inside. MFA strengthens the first. It has no effect on the second.

Authorization isn't something that gets checked at login. It's set once, when access is granted, and then it sits there until someone actively removes it. The challenge is that access removal can be less clearly owned than access approval. IT may know who requested a new permission, but there may be no equally clear trigger to revisit it months later.

Where Access Actually Drifts

This isn't a hypothetical gap. It shows up in a handful of predictable places.

Role changes. An employee moves from sales to operations, or gets promoted into a management role. They're granted access to the new systems. Access from the previous role can remain in place unless the role change also triggers a permission review — offboarding a role isn't usually built into the same checklist as offboarding a person.

Departed employees. Offboarding may cover the primary corporate account while separately managed systems, SaaS applications, VPN profiles or local accounts require their own removal steps.

Temporary access. Contractors, interns, and short-term project staff often get access provisioned quickly to meet a deadline, with no expiry date attached. The project ends; the access doesn't.

Vendor and third-party access. External parties are granted logins to support integrations, manage a system, or troubleshoot an issue. Once the engagement is done, that access is easy to lose track of — it isn't on anyone's internal headcount, so it isn't part of any internal review.

Admin and privileged accounts. These deserve closer attention because they can carry broader permissions than standard user accounts. Reviewing privileged access can also require more context: a permission may be technically powerful but still necessary for a particular operational responsibility, which makes it a harder review to defer to a generic checklist.

None of these require a mistake or a breach to become a liability. They're just what happens when granting access is a process and revoking it isn't.

Why MFA Doesn't Close This Gap

If a former employee's forgotten account is still active, MFA on that account doesn't help — the account shouldn't exist at all. If a vendor's access should have ended when the engagement did, requiring a second factor to use it doesn't change the fact that the access itself is the problem.

MFA reduces the chance that someone else gets into an account that shouldn't be usable. It does nothing to reduce the number of accounts, roles, and permissions that shouldn't be usable in the first place. Authentication controls and access hygiene solve different problems, and a business can be strong on one while being completely blind on the other.

Making Access Review a Habit, Not a Project

The fix isn't a large compliance initiative. It's a recurring, deliberately small process:

• Tie access to role, not to person. When someone changes roles, their previous access should be reviewed for removal at the same time new access is granted — not left as a separate task for later.

• Set expiry by default for temporary and vendor access. Access without an end date tends to become permanent by neglect.

• Review privileged accounts on a fixed schedule, however infrequent, rather than waiting for a reason to look.

• Make offboarding cover every system the person touched, not just the primary directory login.

The starting point does not have to be another security product. Clear ownership, expiry dates for temporary access, and a repeatable review process can already improve how permissions are managed.

The Practical Takeaway

MFA protects the sign-in. Access review addresses a different question: whether the permissions behind that sign-in still make sense.

As roles, projects, and external relationships change, those permissions need to change with them.

For a broader starting point on business cybersecurity, explore RoyceMedia's Complimentary Online Cybersecurity Exposure Assessment.