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Access management / Zugriffsverwaltung
What is access management?
Access management refers to the processes and technologies that determine who or what can access specific resources or data. Once a user or system’s identity is confirmed (authenticated), access management governs their permissions and privileges. It enforces policies like role-based access control (RBAC) and the principle of least privilege, ensuring each identity only accesses what it legitimately needs. In essence, it’s about authorization – granting or denying actions based on an entity’s identity and defined access rights.
How does it affect identity security?
Effective access management is critical to identity security because it acts as the gatekeeper to sensitive information and systems. Even a valid user, if given excessive permissions, can become an insider threat or cause unintentional damage. By tightly controlling access, organizations minimize the attack surface – for example, restricting admin-level functions to only those who require it. Many data breaches stem from compromised credentials or abused privileges, so robust access management helps prevent a stolen identity from turning into a full system compromise. It ensures that even if authentication is bypassed or credentials are stolen, the potential damage is limited by stringent authorization checks.
Case study
A notable example highlighting the need for strict access management is the 2019 Capital One breach. In that incident, an attacker exploited a misconfigured web application firewall to obtain credentials for a cloud IAM role, which then allowed access to millions of customer records stored in Amazon S3. Essentially, a weakness in access management (an over-permissive role accessible via a vulnerability) was leveraged to bypass defenses.
Everything you Need to Know
Authentication verifies a user identity through credentials while authorization dictates the specific resources and actions that the verified identity can access under Identity and Access Management (IAM) protocols. - Use Multi-Factor Authentication (MFA) - Enforce Least Privilege (PoLP) - Audit access logs - Map to NIST SP 800-63
The Principle of Least Privilege (PoLP) restricts user permissions to the absolute minimum required for their job function to prevent lateral movement and mitigate the risk of privilege creep. - Limit administrative rights - Reduce attack surface - Prevent lateral movement - Align with CIS Control 4
Organizations utilize Security Assertion Markup Language (SAML) and OpenID Connect (OIDC) via Identity as a Service (IDaaS) platforms to provide secure and scalable authentication for remote workforces. - Encrypt data with TLS 1.3 - Use port 443 - Implement Single Sign-On (SSO) - Leverage cloud-based IDaaS
Maintaining comprehensive audit trails ensures compliance with regulations like the Health Insurance Portability and Accountability Act (HIPAA) by documenting every instance of data access and system modification. - Capture login timestamps - Record resource requests - Monitor permission changes - Satisfy GDPR requirements
Single Sign-On (SSO) centralizes identity verification to reduce password fatigue and minimize the number of credentials vulnerable to credential harvesting or brute force attacks as described in MITRE ATT\&CK. - Centralize identity management - Eliminate weak passwords - Streamline user workflows - Deploy MFA everywhere
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