What is the principle of least privilege. Why is it important?

The Least Privilege Principle declares that a subject should have access to the minimum privilege required to complete a specific task. If no access right is needed, the subject won’t have it. Moreover, the functional management of the subject will control the assignment of rights. 

Also known as the Principle of Minimal Privilege or the Principle of Least Authority, the Principle of Least Privilege (PoLP) is a fundamental concept in computer security and access control. It states that a user or process should only be given the minimum privileges necessary to perform their intended tasks and nothing more.

The principle is based on the idea that granting excessive privileges increases the potential for unauthorized access, misuse, and unintended actions. By adhering to the Principle of Least Privilege, organizations can limit the damage caused by malicious activities, accidental errors, or software vulnerabilities.

One of the key aspects of the Principle of Least Privilege is granting the minimum necessary access. This involves carefully assessing the requirements of each user or process and determining the precise permissions and privileges they need to fulfill their designated functions. For example, an employee in a company’s finance department may only require read and write access to financial records, while a system administrator may require elevated privileges for system maintenance. By implementing the principle, unnecessary privileges are avoided, minimizing the potential for unauthorized access or unintended actions.

Here are some more key aspects of the Principle of Least Privilege:

  1. Minimum necessary access: Users and processes should have only the permissions and privileges required to fulfill their specific duties or tasks. This minimizes the potential impact of compromised accounts or malicious actions.
  2. Access control granularity: Access controls should be defined at a fine-grained level, allowing administrators to precisely specify the privileges granted to each user or process. This ensures that users only have access to the specific resources they need.
  3. Regular review and audit: Privileges should be periodically reviewed and adjusted as needed. This helps maintain the principle over time and ensures that users do not accumulate unnecessary privileges.
  4. Separation of duties: Sensitive tasks should be divided among multiple users or processes to avoid concentration of power. This reduces the risk of insider threats and makes it more difficult for a single individual to compromise the system.

By applying the Principle of Least Privilege, organizations can enhance the security of their systems and data, mitigate the impact of security breaches, and reduce the attack surface for potential adversaries. It is considered a best practice in various industries and is often implemented through access control mechanisms, such as role-based access control (RBAC) or mandatory access control (MAC) policies.

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What violates the principle of least privilege?

How do you implement the principle of least privilege?

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California Consumer Privacy Act

In information security,  the principle of least privilege (PoLP), AKA the principle of minimal privilege (PoMP) or the principle of least authority (PoLA), requires that in users in the organization should only...

Cloud Access Policies

In information security,  the principle of least privilege (PoLP), AKA the principle of minimal privilege (PoMP) or the principle of least authority (PoLA), requires that in users in the organization should only...

Connect Azure AD with Mongo Atlas

In information security,  the principle of least privilege (PoLP), AKA the principle of minimal privilege (PoMP) or the principle of least authority (PoLA), requires that in users in the organization should only...

Cloud Security Posture Management (CSPM)

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Cloud Workload Protection (CWP)

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Cloud Security

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Cloud PAM

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Credential Stuffing

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Continuous Adaptive Risk Trust Assessment (CARTA)

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Credentials Rotation

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Cloud Infrastructure Entitlement Management (CIEM)

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Cloud Access Management

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Cloud Privileged Access Management

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Credential Theft

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Context-Based Access Management

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Cloud Access Management

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Cloud Governance

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DevOps vs DevSecOps

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Data Access Management

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DevSecOps

In information security,  the principle of least privilege (PoLP), AKA the principle of minimal privilege (PoMP) or the principle of least authority (PoLA), requires that in users in the organization should only...

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Federated Access

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Fedramp Compliance

In information security,  the principle of least privilege (PoLP), AKA the principle of minimal privilege (PoMP) or the principle of least authority (PoLA), requires that in users in the organization should only...

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Gramm-Leach-Bliley Act (GLBA)

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Group Based Access Control (GBAC)

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H

Honeypot

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HIPAA compliance

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IGA (Identity Governance Administration)

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Identity Governance

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Identity Provider (IDP)

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Identity-as-a-Service (IDaaS)

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Identity Governance Administration

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IT Security Policy

In information security,  the principle of least privilege (PoLP), AKA the principle of minimal privilege (PoMP) or the principle of least authority (PoLA), requires that in users in the organization should only...

Incident Response

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Insider Threats

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Identity Sprawl

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Identity Threat Detection and Response (ITDR)

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Log Analysis Management

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Least Privilege Principle

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Lightweight Directory Access Protocol (LDAP)

In information security,  the principle of least privilege (PoLP), AKA the principle of minimal privilege (PoMP) or the principle of least authority (PoLA), requires that in users in the organization should only...

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Man-in-the-Middle Attack

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Multi-cloud Security

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Permissions Management

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Phishing

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PAM vs IAM

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Privileged Access Management as a Service (PAMaaS)

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Password Vaulting

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Privileged Identity Management (PIM)

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Privilege Creep

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Password Spraying

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PCI Compliance

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Standing Privileges

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Shadow Access

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System for Cross-domain Identity Management (SCIM)

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Security Assertion Markup Language (SAML)

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Security Information and Event Management (SIEM)

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Spear Phishing

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SAML

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T

Trunk-based Development

In information security,  the principle of least privilege (PoLP), AKA the principle of minimal privilege (PoMP) or the principle of least authority (PoLA), requires that in users in the organization should only...