What Is the Principle of Least Privilege (PoLP)?

Apr 14, 2025

-minute read

Workforce IAM Evangelist

Key Takeaways

Too much access invites trouble—PoLP keeps users, apps, and systems limited to only what they need.
Privilege creep is silent risk—unused permissions stack up and open doors to attackers.
Zero Trust needs PoLP—fine-grained, dynamic access is key to stopping lateral movement.
Apps can overreach too—audit software like users and remove unused or excessive permissions.
PoLP isn’t set-and-forget—regular audits, real-time monitoring, and credential rotation keep it strong.

The principle of least privilege (PoLP), sometimes called the principle of minimal privilege, is a common sense approach to access control for enterprises. Users, systems and processes should only be given access to the networks, data and other resources required to perform their assigned function, and no more. Failure to adhere to PoLP can lead to massive data breaches.

Privilege Creep Defined

Privilege creep is the gradual accumulation of access rights or permissions by users beyond what they need to perform their job functions. It often occurs when access is not revoked after role changes or project completions, increasing the risk of security breaches or compliance violations. The principle of least privilege aims to fight privilege creep by only granting users the necessary, but needed privileges to perform their given job function.

Unchecked privilege creep not only increases the blast radius of a potential breach, but it also makes detecting malicious behavior more difficult. When users have access to systems they no longer need, unusual activity may go unnoticed because it's technically "allowed" under their outdated permissions. This excess access becomes especially dangerous in the hands of compromised accounts or insider threats.

Why is the Principle of Least Privilege (PoLP) Important?

Permitting all users to have the same access to sensitive data and resources is a risk businesses cannot afford. The principle of least privilege is a framework that helps secure your resources from bad actors, including malicious and error-prone insiders. In addition to financial losses and damage to your brand, bad actors can install ransomware, disrupt operations and use stolen personal data for extortion or other crimes. Keeping access limited to just the resources a user actually needs reduces the amount of damage that can be done.

Benefits of the Principle of Least Privilege Include:

Reduce the attack surface. By limiting access to resources to just those that are required by each user for their specific function, cybercriminals that take over accounts will be kept from accessing all resources.
Limit lateral movement of bad actors. Bad actors often require privileged access to reach sensitive systems, and without that access, a loss of record can be thwarted.
Adhere to regulatory compliance. Some regulations require the principle of least privilege to be in place to comply with industry regulations and prevent penalties.
Increase accountability. By limiting permissions, you can more easily keep track of the users and systems with access to sensitive data, networks and other resources.
Improve performance and the user experience. Keeping unnecessary users out of systems and resources increases productivity for the users that do need access and reduces confusion for those that don't.

Real-World Least Privilege: What It Looks Like in Action

In practice, the principle of least privilege (PoLP) means users are granted only the permissions required to read, write, or execute tasks directly tied to their responsibilities—and nothing more. Temporary access can be provisioned for short-term needs, ensuring users don’t hold onto sensitive permissions longer than necessary. Without these controls, it's easy for organizations to inadvertently create a bloated ecosystem of overprivileged users, dramatically increasing the potential impact of both internal and external threats.

Adopting PoLP as a default policy helps prevent these exposures. Especially in the case of system administrators—often the most targeted accounts—overreaching privileges should be tightly scoped and carefully segmented. Just because someone can have root access doesn’t mean they should. When new systems or applications are deployed, organizations should disable all nonessential services and settings, including default permissions that are often overlooked.

Finally, logging is critical. Every authentication attempt and access control change should be recorded. These logs provide visibility into suspicious behaviors like repeated login failures or unauthorized privilege escalations. Regular privilege reviews ensure users haven’t quietly amassed excessive access over time. Least privilege isn’t a one-time configuration—it’s an ongoing discipline.

When Apps Know Too Much: Least Privilege for Software

It’s not just people who get overprivileged—applications do too. When software is granted broader access than it actually needs, it can introduce serious risk, especially if exploited by attackers. These risks often come in two forms: unused permissions and reducible permissions.

Unused permissions are those granted to an app but never actually used. For instance, an app might be given permission to access a user's calendar, but if it never calls a calendar API, that permission serves no purpose—and becomes a liability. If the app is compromised, an attacker can exploit that unused access to move laterally or exfiltrate sensitive data.

Reducible permissions are even more subtle. These are overly broad permissions that could be replaced with narrower ones without affecting functionality. For example, if an app only reads user profiles, it shouldn’t have write permissions as well. Keeping permissions laser-focused helps reduce vertical privilege escalation risks

The remedy? Audit your apps. Ensure every permission has a reason to exist, and downgrade wherever possible. Less access means fewer doors for attackers to walk through.

How Least Privilege Works with Zero Trust

Zero Trust isn’t just a buzzword—it’s a complete security philosophy built on the assumption that no user or device can be inherently trusted. In this model, access must be earned, validated, and strictly limited at every point of entry. This is where the principle of least privilege becomes indispensable.

Rather than giving users broad access once inside a VPN or internal network, Zero Trust insists on segmenting and scoping access at the finest level. That means Dave can give Melissa a backup key to the house—but not one that opens every drawer inside it. With PoLP, every door requires a separate key, and only the necessary ones are distributed.

Legacy models that rely on perimeter-based security—like VPNs—grant users access to an entire internal environment once authenticated. But in a Zero Trust + PoLP setup, access is highly contextual and dynamic. A marketing employee can’t suddenly browse finance systems, and even an admin must reauthenticate before performing privileged actions. This alignment is critical for modern cloud-first, hybrid, and remote-first environments, where the traditional notion of “inside the firewall” no longer exists.

How to Implement the Least Privilege in Your Organization

Implementing the Principle of Least Privilege (PoLP) is not just a one-time policy decision—it’s a living framework that must be embedded across people, processes, and platforms. Done well, PoLP becomes a proactive security measure that hardens your environment against internal abuse, credential compromise, and lateral movement. Here’s how to make that vision a reality.

1. Start with a Full Privilege Audit

Begin by scanning your entire IT ecosystem—on-premises and in the cloud—to uncover every instance of privileged access. This includes admin accounts, stored credentials (like SSH keys and API tokens), password hashes, and IAM roles assigned to both human users and non-human identities (e.g., bots, service accounts, and CI/CD pipelines). Many organizations are surprised by just how many privileged credentials exist in forgotten corners of their environments. Without visibility, PoLP can’t be enforced.

2. Strip Away Unnecessary Admin Rights

One of the most immediate ways to reduce your risk is to eliminate local administrator privileges that serve no legitimate purpose. Apply this rule universally: no user—human or machine—should have broader access than absolutely necessary. Grant only what’s needed to perform a defined job function, and avoid default admin configurations that come bundled with software or OS deployments.

3. Separate and Isolate Privileged Roles

Privileged accounts (like root or domain admins) should never be used for day-to-day operations. Instead, create separate accounts for administrative tasks and standard use. Then, isolate these privileged sessions using jump boxes, bastion hosts, or session management tools to prevent their abuse or hijacking. Segmentation is your ally here: the harder it is to reach high-value systems, the lower the risk of compromise.

4. Enforce Immediate Credential Rotation

After every privileged session, rotate associated passwords or keys. This practice renders any captured credentials (via keyloggers or memory scraping) immediately useless. It also mitigates the risk of “Pass-the-Hash” attacks, in which stolen hash values are reused to impersonate privileged users.

5. Monitor All Privileged Activity in Real Time

Privileged access is a high-value target—treat it that way. Implement real-time monitoring and behavioral analytics to flag unusual activity, such as privilege escalation, failed login attempts, or access from unfamiliar locations or devices. Alerts should trigger automatic investigations or enforcement actions, particularly in environments where privileged misuse can cause significant operational or financial damage.

6. Enable Just-in-Time Access

Instead of permanently granting high-level access, adopt a just-in-time (JIT) model. This allows users to request privileged access for a limited window—say, to perform a patch or system update—and revokes it automatically once the task is complete. JIT reduces standing privileges, narrows the attack surface, and makes abuse easier to detect.

7. Prune Cloud Entitlements Regularly

Cloud environments like AWS, Azure, and GCP are notoriously complex when it comes to permission sprawl. Audit Identity and Access Management (IAM) configurations regularly to identify excessive, stale, or unused privileges. Lean on tools that assess effective permissions—not just what’s granted, but what’s actively used—and automate the process of revoking unnecessary access.

Best Practices for Principle of Least Privilege (PoLP)

Setting up the parameters to implement the principle of least privilege starts at the planning stage and continues throughout the lifecycle of your enterprise. A review of current practices and access settings is a good place to start.

Adopt a Zero Trust Security Approach

Zero Trust approach to security is based on the philosophy that enterprises should trust no one and verify everything, because external and internal threats exist at all times. Authentication and authorization are important steps in limiting access and protecting resources. Authentication requires users to prove their identities. Multi-factor authentication (MFA) requires users to provide two or more authentication factors, so hackers with compromised credentials will be stopped before entering your system. After users are authenticated, enterprises use authorization to control access to resources based on PoLP, which can be preassigned by role or customized for the user.

Identity and access management (IAM) solutions to build authentication and authorization policies are available for workforces, customers and partners.

Use Privileged Access Management (PAM) Solutions for Increased Security

Privileged accounts are a prime target for bad actors, because administrator-level privileges allow greater access and control to data, networks, systems and other resources. Privileged access management (PAM) solutions allow organizations to monitor, secure and control access to resources for privileged accounts. To further limit access to resources, just-in-time (JIT) privileges can be set for specific projects or timeframes. Privileged access management (PAM) solutions are used in conjunction with identity and access management (IAM) solutions, and they work together to support and enhance each other.

Ensure Application Programming Interface (API) Security

An application programming interface (API) is used to communicate between computers or applications, but can be overlooked as a cybersecurity vulnerability. Enterprises and programmers that lack security protocols during development put resources at risk. Four items on the Open Web Application Security Project (OWASP) API Security Top 10 (including the top two) relate directly to a lack of access control rules and strong authentication.

OWASP API Security Top 10

API1: Broken Object Level Authorization

API6: Mass Assignment

API2: Broken Authentication

API7: Security Misconfiguration

API3: Excessive Data Exposure

API8: Injection

API4: Lack of Resource & Rate Limiting

API9: Improper Asset Management

API5: Broken Function Level Auth

API10: Insufficient Logging & Monitoring

Conduct Ongoing Audits

Don't let things fall through the cracks after the initial implementation. Frequently review users, accounts, processes and systems to make sure they can only access necessary resources. People leave jobs, third-party vendors and partners change, and systems get updated or replaced. Ongoing security audits allow you to keep track of privileges that need to be revoked or updated.

Examples of Principle of Least Privilege (PoLP)

There are numerous examples of ensuring users are limited to just the resources they need, including:

An employee on the sales team has access to the customer relationship management (CRM) system, but not confidential HR personnel files.
A temporary employee hired for data entry is able to add information to certain files, but cannot alter formulas, download files or access other files.
A customer has access to information needed to buy products and maintain their own account, but nothing more.

Please watch this video to see how people working remotely during the pandemic increased the adoption of Zero Trust security.

Hello, everyone.
I'm Rob Otto from Ping Identity.
And I'm here today with Ben Bulpett from SailPoint.
We want to talk about the new normal of working from home.
Hi, Ben, always good to see you again.
>> So good to see you as well.
And obviously a shame that we can't be face to face in these strange times, but great to have a chat with you this morning.
>> Yeah, it does feel like a while since the last time when I saw you or anybody else in person, really, but as you say, here's hoping that.
[LAUGH] >> Yeah.
>> That we might get back to that at some point.
That said, though, Ben, I mean, remote working really is becoming the new normal for a vast majority of organizations.
Here at Ping Identity, we've obviously been speaking to a number of our customers and a number of prospects around this new paradigm, this new model.
And there are certainly challenges that these organizations face.
So I'm sure you've probably heard of some.
>> Yeah, so look, I think the statistic is something like 16% of workers prior to COVID were working from home.
I think currently, the statistics say it stands at 84%.
So the shift of that remote working challenge that organizations have had to do in the, what, three, four months has been quite phenomenal.
Are they gonna be coming back to this traditional office-based environment?
They've demonstrated that they can work from home.
They've demonstrated that they can be proficient and efficient as well.
So I think we're gonna see this working remotely, this adoption of Zoom, which has obviously now become a verb in the English language, something that's gonna be here to stay, I think.
>> This, of course, does tend to reinforce things that we've been talking about for some time.
It puts a lot of strain on some of the more traditional ways in which application access is enabled and, of course, in which applications are secured.
A lot of organizations today work on the assumption that the people who need to access things are in a known location.
They're in the office.
And as a result, you have that, if you like, that safety net of the secure perimeter that organizations can use as a proxy in order to determine who should be allowed to access things.
Obviously, we're both in the identity and access management space.
And this is a message for us that's been a part of our standard discourse for many years now that organizations really need to be focusing on the identity of those individuals.
They need a security policy that starts with a strongly verified and a strongly authenticated identity in order to ensure that the correct users are able to access the correct things, right?
>> The challenge I think organizations face is that the identity and the perimeter that they previously secured is now actually coming down to the individual identities in their organization.
You and I, Rob, have talked about the concept of Zero Trust, and I think Zero Trust has never been more appropriate in what has happened.
You need to now know who has got access to what applications, what they're doing with that access.
Is it appropriate?
And actually then be able to audit that and clearly demonstrate to the auditors and the regulatory bodies that you are in compliance and you do have control of your application and your data.
What we've seen with COVID is a bit of a break glass approach, where we've had companies just sort of give access and they've got people online to be productive.
They now have to go back and put this identity governance and this access control in place to sort of ensure that they have got controls.
Because as people do transition back into this new way of working and say, well, actually, I'm not gonna come back to work.
I'm not gonna spend time on the 6:30 train just to get into London.
I think the whole concept of identity governance and putting in a Zero Trust approach around that is gonna become critical.
And something that I know you and I have spoken about for the last couple of years as a strategy that organizations need to start to adopt.
>> Yeah, absolutely right.
So I think something you've touched on there is really important around productivity.
And obviously, in the identity security space, this tends to be one of the things that we speak to organizations about a lot is: where exactly is that trade-off between employee productivity as opposed to security?
So again, what becomes really important is it starts obviously with understanding who your users are, ensuring that you are able to correctly identify those users.
And secure their access in such a way that respects the principle of Zero Trust, respects things like least privilege access and allows you to enforce defense in depth.
So one of the things that we're seeing as becoming really important is the ability, while still enabling remote access and while doing so in a way that moves towards Zero Trust, but that doesn't make decisions based purely on the user's location.
We do still need to try and find mechanisms to improve their productivity.
Things like not always making them go through a multi-factor authentication challenge for everything that they access.
I'm not sure if you're having similar conversations to those with your customers.
>> Yeah, look, we've had a number of conversations with organizations who are sort of now engaging in a more, what I would define as an executive engagement level conversation around identity governance.
How do you get your data back?
How do you ensure that you minimize that access?
How do you ensure that you control the people who have been accessing your systems are done correctly?
So this whole concept of trust no one, don't trust the network, and don't trust any device, I think is gonna become more critical.
And I would actually say that firstly, organizations need to put a really strong access control and governance process in place.
Get control of the access, get control of the identity, put that Zero Trust in place.
So for us, our conversation is actually do more, get secure, become more paranoid, get control.
Once you've got that and you've got your staff and you've got your policies, then start to let that go.
We're not advocating in any way, shape, or form at the moment that people should let their policies lapse or sort of be lenient with them.
Because I think the challenge is gonna be as the join or move or leave process kicks in and as we probably have more leavers than we do joiners.
>> Ben, look, I think you're absolutely spot on here.
You need to be in control.
You need to be able to show those important things around access governance as you've said.
Making absolutely sure that you know who's coming and making absolutely sure that those people are getting access to the right things.
I think the other thing that's interesting in what you've sort of brought up is that organizations more than ever are going to need to be more agile in the space.
I mean, we've seen, probably for most organizations within the course of two or three weeks, an event that meant they had to completely turn upside down everything that they did in terms of how their workforce is able to do the simplest thing, which is log in the morning and access their applications.
>> I think the reality is this is going to be the new normal.
As I said before, when you had that massive shift in such a short space of time with people working from home and actually trying to be and I think demonstrating productivity.
And you've seen organizations announced by Facebook and Google, this is gonna be the way that they encourage their staff to be.
So I think this is going to be a fundamental industrial shift that we've seen.
But rather than happen over the years that we typically experienced, it took ten years for the iPhone to sort of become really embedded in today's cultural society.
This has happened in three months.
And I think organizations need to adapt their security and access control and governance policies because this is going to be how it is.
And the firewall and that controlled environment around their perimeter, around their offices are fundamentally disappearing.
And they've got to be prepared to be adaptable and agile, but also have all the correct governance, security policies, and access controls in place to give their ability to allow their users and their employees to come in.
But more importantly, to continually demonstrate to the regulator and to the industrial bodies that they're a part of that they have control over who's got access, how they got access, and what they're doing with that.
Those three questions are gonna become board level conversations that auditors and CEOs will be asking CISOs: I need to have answers to that.
Because that is exactly how I'm gonna be asked by the committees, by the shareholders.
Have we got control of that?
And do we actually know who's got access to our systems and what they're doing?
>> It's interesting, though, as you say, this becomes a new way of working.
Many of those office-based roles are transitioning to remote and are probably going to stay remote for some time to come, perhaps forever.
What this really means, though, is that any investment now in a platform or series of platforms that allows strong identity-based governance and access really does become a strategic investment for organizations.
And they're going to reap rewards from those investments in the years to come.
It is obviously really important, though, that the tools that we use and the platforms that we put in place are able to allow us that agility over time.
Our access control systems need to be adaptable, need to be agile enough to recognize their changing behavior.
And to adapt themselves so that the first time I log in from home from an IP address that hasn't been seen before, of course, I should be prompted for a multi-factor authentication step up.
But the tenth time that I do that, if it's happening every day at the same time, the application really needs to be smart enough to adapt to figure out, well, this is now a normal pattern of behavior for Rob.
So we're going to step down that friction, or we're going to increase his productivity by not making him do the fingerprint swipe on his phone every morning.
>> One of the concepts that we've talked about is this role or this capability called dissolving entitlements.
Look, if someone's not accessing a particular application or a particular file share or a particular team shared site, the application and the identity governance platform should start to take away that access.
With the capabilities of machine learning and an AI, we know what their access is.
We know what they have access to.
That can be stored into the identity governance and the access manager platform.
And then when they come back on to log onto that system two, three, four, five weeks later, they can be challenged.
And they can be, say, well, you haven't logged on to this.
We know what entitlements you had.
We know what access you had, but we're now gonna challenge you.
Because actually what we want to do is minimize and mitigate that risk.
Historically, people have logged into their machines when they've walked into the office between 9 to 5:30.
Well, now, people are working longer.
Maybe I'm gonna log in at 7:30 at night.
I've taken the dog for a walk, played with the kids, put them to bed.
And now I wanna log in.
Well, if I do that the first time, I want the system to challenge me.
I wanna be challenged by that because those entitlements that we typically see between 9 to 5 are now coming in at a different time.
I wanna challenge, I just wanna make sure who you are by asking you not only what you know, but also challenge you with something that you have.
And I think that's where the governance and the access tools that you and I talk about through Ping and SailPoint start to come in.
Which actually is we build in AI and machine learning into our platforms.
Have they got the right entitlement rights or do we need to look at the role that they're undertaking?
Is it something that we need to perhaps put a new policy in?
And I think that's where you start to see this autonomous identity, this whole capability of AI and machine learning.
That's gonna be the next evolution of this governance platform, which again, will further support the concept of Zero Trust.
Because the machines and the AI will start to put even more security around it, but actually you start to make decisions that are safe and secure, but again, fully authenticable.
>> Absolutely, the benefits of a strong security approach based on the concepts of identity and access management, of strong identity governance, of strong and adaptive access.
Not only do they allow organizations to cope with an unprecedented, if that comes along, such as the COVID-19 pandemic, which nobody really had much warning at all.
But certainly, they start to enable an organization to be a lot more agile in terms of how and where their workforce is deployed and where they access from.
And essentially, it's an investment in future proofing your business, allowing you to handle these new scenarios that might come up.
Any closing thoughts from yourself, Ben?
>> Yeah, look, I gave an interesting talk once about the free solo climb by Alex Arnold, who did the climb on the El Capitan without any ropes or harnessing.
I thought it was a fascinating insight into any individual, but very, very, applicable to our industry.
Everyone sort of looks at Alex and the way he climbed it and it wasn't that amazing.
But what people didn't realize is that he had a whole team around him.
He practiced that.
He had the best equipment available to him.
He tried, and there was even a story that the night before he climbed the free solo, he climbed up, dried some of the rock, made sure the chalk markings were on the rock for his footings.
But what was the most important thing is that he achieved that through working with the best teams and using the best tools and the best equipment that was available to him.
And what SailPoint and Ping have given and have clearly demonstrated by combining our technologies by taking a joint, combined, integrated approach.
We give people the best tools, the best equipment, the best chance of success at protecting their environment.
And for me, that's gonna be critical.
It's not about one-size-fits-all.
It's about having the best team, the best equipment, and the best integrated solutions that allow organizations to mitigate and protect themselves against this new way of working, this new norm that's gonna probably be here at least for the next 6, 12, 18 months.
And maybe, as I said, maybe we'll never go back to the 6:30 journey on the train with the trains packed.
Maybe people will start to sort of embrace a slightly more work/life balance because we clearly demonstrated that we can be as productive, as capable, and as efficient working from home.
>> Absolutely, thank you so much, Ben.
Again, yeah, really just to reiterate that, organizations can feel they'll be in really safe hands with Ping Identity and SailPoint.
Both organizations with a really long and proud track record of focus in this industry.
Ben, thank you so- >> Thank you, as always, good to see you, and catch up soon for a beer, hopefully.
>> Absolutely, let's hope so.
Do take care.
Thank you, Ben.
>> Cheers, mate, thanks, bye.
>> Bye.

Common Questions About the Principle of Least Privilege (PoLP)

Unlike role-based access control (RBAC) or discretionary access control (DAC), the principle of least privilege is a minimalist, needs-based approach. PoLP doesn’t just define access based on a user’s role—it ensures users, systems, and applications are granted only the specific permissions necessary to perform their current task. This limits the potential damage if credentials are compromised and prevents unnecessary lateral movement within systems.

Yes. Many identity and access management (IAM) tools support automation for PoLP through features like policy-based access controls, access review workflows, and just-in-time (JIT) privilege elevation. Automation helps enforce consistent least-privilege policies across dynamic environments, reducing the manual overhead and human error associated with managing access at scale.

In cloud environments, PoLP is especially critical due to the dynamic and distributed nature of resources. Permissions and entitlements must be tightly scoped to individual services and workloads across platforms. Misconfigurations—such as granting full administrative rights to service accounts or containers—can result in excessive access. Using identity-based policies and continuous permission audits helps maintain least-privilege in cloud-native systems.

While PoLP might seem restrictive, when implemented correctly, it actually enhances productivity. It simplifies interfaces and reduces the cognitive load on users by removing access to tools or data they don’t need. Temporary access mechanisms and automated provisioning help balance security with user convenience, ensuring that legitimate work isn’t delayed by over-tightened restrictions.

Third-party vendors often need temporary or limited access to internal systems. Applying PoLP to these external users helps reduce risk by ensuring they can only interact with the specific systems or data they need. It’s best to grant vendor access using time-bound privileges, detailed access scopes, and strong authentication methods to minimize exposure.

PoLP is a core requirement in many security and data protection frameworks, including ISO 27001, HIPAA, SOX, and NIST. Regulators expect organizations to minimize access to sensitive data and maintain detailed logs of permission changes and access requests. Implementing PoLP helps demonstrate a strong security posture and aids in passing audits and avoiding penalties.

Regular reviews—typically quarterly or biannually—are essential to maintaining effective PoLP. Access needs evolve with role changes, project completions, and organizational shifts. Automating access reviews and setting up periodic audits ensures outdated or excessive permissions are consistently removed, keeping privilege creep in check.

Yes. Non-human identities such as bots, APIs, IoT devices, and AI/ML workloads also require tightly scoped permissions. Each entity should be issued credentials or tokens with narrowly defined access to limit potential misuse or compromise. Applying PoLP to machines is critical to preventing them from becoming an unmonitored backdoor into sensitive environments.

Several enterprise-grade solutions support PoLP enforcement through centralized identity management, dynamic access provisioning, auditing, and privilege session recording. These tools integrate with identity providers, cloud platforms, and on-prem systems to offer unified access governance. Logging, monitoring, and multi-factor authentication further reinforce PoLP in both hybrid and cloud-native infrastructures.

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