With the rise of cloud applications and remote work, cybersecurity practices no longer revolve around securing the network perimeter of a centralized workplace. As part of this paradigm shift, we are witnessing the frameworks of Secure Access Service Edge (SASE) and Zero Trust gain increasing popularity in the cybersecurity sphere. With both models targeted at overcoming limitations of traditional cybersecurity models, let’s clarify how SASE and Zero Trust differ and relate to each other, and the role they play in enabling next-generation data security.
The Zero Trust security model is designed to overcome the limits of traditional security models by eliminating implicit trust towards all access requests. It revolves around the core principles of “never trust, always verify”, “assume breach” and “least privileged access”, which allows for the enforcement of more granular security controls to safeguard subjects, enterprise assets, and resources.
The Secure Access Service Edge (SASE) model, introduced by Gartner in 2019, is a cloud-based architecture that consolidates the functionalities of traditional network security devices, such as firewalls, secure web gateways (SWG), and virtual private networks (VPN), into a unified service. In addition, SASE can include features such as zero-trust network access (ZTNA), secure web access, cloud access security broker (CASB), and data loss prevention (DLP). In doing so, it aims to streamline network access and enhance adherence to security and compliance policies.
Therefore, SASE represents a consolidated cloud-based architecture, while Zero Trust represents a cybersecurity strategy that the former helps to enable in the realm of network access.