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Writer's pictureHeather Pennel

Zero Trust Security - Not Just a Trend



"Never trust, always verify" — John Kindervag



Zero Trust Security is a security model that requires strict identity verification for every person and device trying to access resources on a private network, regardless of whether they are sitting within or outside of the network perimeter. This model operates on the assumption that a breach is inevitable or has already occurred, and, as a result, it does not trust any user or device by default, even if they are already inside the network.


Zero Trust Security has gained significant traction in cybersecurity as a validated security model outlined in the NIST 800-207 standard. Although often misconstrued as a fleeting trend, cybersecurity experts have long advocated its fundamental principles. This approach is not just a reaction to breaches, but a proactive strategy that strongly emphasizes the continuous verification of access, meticulously minimizing the impact of potential breaches, and harnessing behavioral data and context to deliver precise responses to security threats.


Embarking on the journey to implement Zero Trust Security necessitates an exhaustive inventory of an organization's digital assets, encompassing comprehensive networks, data, devices, workloads, and identity. This meticulous inventory is crucial in prioritizing and safeguarding critical assets effectively and providing unparalleled visibility into resource access and the flow of sensitive data.


Furthermore, organizations are advised to adopt the network segmentation strategy or leverage micro-segmentation to exert strict control and confine access to sensitive areas. Additionally, it is highly recommended that all endpoint devices be validated before network access is granted and that credentials and devices be carefully monitored to establish baseline behavior patterns for heightened identity verification and proactive threat detection.


The deployment of alerting tools to attain comprehensive visibility into the system and ensure the effective implementation of Zero Trust policies is indispensable. Moreover, the establishment of detailed logs that meticulously capture asset connections, updates, and changes is paramount. Simultaneously, evaluating and prioritizing business processes and data flows to align with organizational objectives effectively is a critical foundational step.


Opting for a Secure Access Service Edge (SASE) solution integrated with micro-segmentation and identity management can significantly bolster an organization's capacity to thwart potential breaches. Additionally, the mandatory enforcement of multi-factor authentication (MFA) for user authentication and the strict adherence to the Principle of Least Privilege (PoLP) to confine user and system permissions to what is strictly essential for their tasks are pivotal measures to strengthen the security posture.


Finally, engaging a cybersecurity professional underscores the commitment to ensuring the correct, efficient, and robust implementation of Zero Trust Security, thereby fortifying businesses against prevailing and emergent cyber threats. This collaboration is a testament to an organization's unwavering dedication to safeguarding its digital infrastructure and data assets.

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