The principle of least privilege (PoLP) refers to an information security concept in which a user is given the minimum levels of access – or permissions – needed to perform his/her job functions. It is widely considered to be a cybersecurity best practice and is a fundamental step in protecting access to high-value data and assets. Least privilege extends beyond human access. The model can be applied to applications, systems, or connected devices that require privileges or permissions to perform a required task. Least privilege enforcement ensures the non-human tool has the requisite access needed – and nothing more.
When organizations opt to revoke all administrative rights from business users, the IT team will often need to re-grant privileges so that users can perform certain tasks. For example, many legacy and homegrown applications used within enterprise IT environments require privileges to run, as do many commercial off-the-shelf (COTS) applications. For business users to run these authorized and necessary applications, the IT team has to give local administrator privileges back to the users. Once privileges are re-granted, they are rarely revoked, and over time, organizations can end up with many of their users holding local administrator rights again. This “privilege creep” reopens the security loophole associated with excessive administrative rights and makes organizations – that likely believe they are well-protected - more vulnerable to threats. By implementing least privilege access controls, organizations can help curb “privilege creep” and ensure human and non-human users only have the minimum levels of access required.
The principle of least privilege works by limiting the accessible data, resources, applications and application functions to only that which a user or entity requires to execute their specific task or workflow. Without incorporating the principle of least privilege, organizations create over-privileged users or entities that increase the potential for breaches and misuse of critical systems and data.
Within ZTNA 2.0, the principle of least privilege means the information technology system can dynamically identify users, devices, applications and application functions a user or entity accesses, regardless of the IP address, protocol or port an application uses. This includes modern communication and collaboration applications that use dynamic ports.
The principle of least privilege as executed within ZTNA 2.0 eliminates the need for administrators to think about the network architecture or low-level network constructs such as FQDN, ports or protocols, enabling fine-grained access control for comprehensive least-privileged access.
The principle of least privilege is an important information security construct for organizations operating in today’s hybrid workplace to help protect them from cyberattacks and the financial, data and reputational losses that follow when ransomware, malware and other malicious threats impact their operations.
The principle of least privilege strikes a balance between usability and security to safeguard critical data and systems by minimizing the attack surface, limiting cyberattacks, enhancing operational performance and reducing the impact of human error.
Evaluate user roles and permissions: Start by reviewing and documenting the specific access needs for every user role within your organization. This will assist you in identifying unnecessary privileges and potential security threats.
Adopt an identity and access management (IAM) system: An IAM system can simplify user provisioning, ensure proper authentication, and make managing user privileges easier.
Regularly refresh user access permissions: Regularly review and modify user access permissions based on changing roles, responsibilities, or project needs. This will help uphold the principle of least privilege over time.
The Principle of Least Privilege is a fundamental factor in your security and compliance policies, and this can even be taken further towards operating in a Zero Trust framework.
Companies need to be particularly aware of any and every identity trying to access anything across their cloud environments, shifting from the traditional way of thinking about perimeter security to something much more solid and protective.
The Principle of Least Privilege goes a long way in securing environments in the ever-transforming digital landscape.
At Loginsoft, least privilege is essential to building secure, resilient environments. Our Security Engineering, Threat Intelligence, and Vulnerability Research Services help organizations identify excess permissions, improve access governance, and strengthen identity-based defenses.
Loginsoft supports least privilege implementation through
Our work ensures organizations maintain tight, controlled access that protects them from both malicious actors and accidental misuse.
Q1. What is the principle of least privilege?
It is a security practice that grants users and systems the minimum permissions they need to perform their tasks.
Q2. Why is least privilege important?
It reduces insider threats, limits attack damage, prevents unauthorized access, and supports compliance and zero trust security.
Q3. How does least privilege work?
By reviewing roles, assigning minimal access, monitoring usage, and removing unnecessary permissions over time.
Q4. What tools support least privilege?
IAM, PAM, access governance platforms, and automated provisioning workflows.