Securing SAP with Zero Trust: Practical approaches and implementation strategies

Zero Trust is a security framework and concept that challenges the traditional perimeter-based approach to cybersecurity. It operates under the assumption that no user or device, whether internal or external to the network, should be inherently trusted.

Instead, Zero Trust advocates for continuous verification and strict access controls to protect critical resources and data.

In a Zero Trust model, every user, device, and network component are treated as untrusted until proven otherwise. This approach emphasises authentication, authorisation, and encryption to enforce granular access controls and minimise the potential attack surface.

It focuses on verifying identity and device security posture before granting access to resources, regardless of the network location.

Four key principles of Zero Trust are:

• Least privilege
  Only the bare minimum access is granted to users and devices - what they need to perform specific tasks and no more - so that the risk of unauthorised action or lateral movement is minimised.
• Microsegmentation
  Dividing networks into smaller segments and strictly controlling traffic between them limits the chance for lateral spread.
  
• Continuous monitoring
  Monitoring and analysis of network traffic, device posture and user behaviour in real-time enables anomalies and potential threats to be detected quickly. 
• Multi-Factor authentication (MFA)
  Users are required to provide multiple forms of verification to access resources, such as a password plus a unique token or biometric information. 

By adopting a Zero Trust approach, organisations can enhance their overall security posture, reduce the risk of data breaches and insider threats, and better protect against sophisticated cyber-attacks.

However, Zero Trust is not limited to a specific technology or solution. Instead, it encompasses a mindset and approach that organisations can implement based on their unique requirements and infrastructure.

How does Zero Trust apply to SAP?

Implementing a Zero Trust model within your organisation's SAP landscape can greatly strengthen your overall security, whether your SAP environment is on-premise, cloud or hybrid. 

To turn the concept of Zero Trust into a practical reality in SAP, there are several steps you can take to embrace the values of Zero Trust in your deployment.

• User verification
  It is vital to close the security gap that often exists because of a lack of integration between SAP and enterprise-level Identity and Access Management initiatives.
  Integration with Single Sign-On and Multi-Factor Authentication allows systems and data to be better protected, and to keep the approach to identity consistent across the whole SAP estate. In addition, governing 3rd party access is an essential component in securing SAP. 
• Access limitation
  Control over access, including roles and authorisations, should extend to edge cases like privileged account management, data masking and the detection of access misuse.

To see the full list of ways Zero Trust applies to SAP - and additional insights into how SAP's portfolio can help achieve Zero Trust - download the full guide here.