Businesses are always in need of the most robust security possible. As the remote workforce expanded during and post-COVID, so did the attack surface for cybercriminals\u2014forcing security teams to pivot their strategy to effectively protect company resources. Furthermore, the rise of organisations moving to the cloud, increasing complexity of IT environments, and legacy technical debts means tighter security mechanisms are vital.\n\nDuring this time of change, the hype around Zero Trust increased, but with several different interpretations of what it was and how it helps. Zero Trust means \u2014 as the name suggests \u2014 to trust nothing by default.\n\nZero Trust isn\u2019t a software in itself, but a strategy. Meeting the mandate will mean using a number of approaches, techniques and software types. The challenge only grows for those working piecemeal, without an overarching plan for using software and platforms that work together. In this article, I\u2019ll discuss whether Zero Trust is a strategy to which all businesses should strive towards, the growing shift towards a holistic security approach and how XDR aligns with Zero Trust.\n\nIs Zero Trust an achievable goal for all businesses?\n\nZero Trust is an approach, not something that can be purchased. Just like a company will never be \u201c100% secure\u201d, it will never likely have \u201cachieved Zero Trust.\u201d That doesn\u2019t mean security and Zero Trust are abandoned, but instead they are goals that are continuously strived for.\n\nAt Trend Micro, we leverage the terminology and concept of \u201cZero Trust\u201d to help our own employees gain awareness of cybersecurity, while focusing on enhancements of foundational cybersecurity maturity through people, process and technology:\n\nIt is extremely costly to achieve the highest maturity of Zero Trust in an IT environment and in most cases, it is not economically feasible nor practical to do so. The maturity level should depend on the enterprise's risk management framework and approaches as well as its data classification.\n\nShifting towards a holistic approach \n\nOrganisations often begin their Zero Trust journey when faced with new security considerations as they move to the cloud. Migrating on-premises resources to the cloud entails monitoring a growing digital attack surface, which equals all possible entry points for unauthorised access into any system that is typically complex, massive, and constantly evolving.\n\nSince the cloud doesn\u2019t have a perimeter like on-premises environments, IT teams are struggling to keep up. A recent global study by Trend Micro found that SecOps lack confidence in their ability to prioritise or respond to alerts, with 54% of respondents saying they were \u201cdrowning in alerts\u201d. With many enterprises using a hybrid cloud environment, operating several siloed point products to catch cyberthreats can be extremely challenging.\n\nOrganisations should look towards a holistic approach, adopting defensive in-depth security with multiple layers of protection. A unified cybersecurity platform, like Trend Micro One, provides enterprise-wide visibility, detection, and response combined with the security capabilities you need throughout the attack surface risk lifecycle. Our platform enables SecOps teams by providing a single point of truth across the entire infrastructure, gathering telemetry from all environments and correlating threat data to deliver fewer, but highly relevant, alerts to manage.\n\nHow XDR creates a solid foundation for Zero Trust\n\nTo properly assess the trustworthiness of any devices or applications, you need comprehensive visibility across your environment. A well implemented XDR solution provides full cyber risk visibility into an IT environment and when used in tandem with the Zero Trust approach, organisations can further enhance their security.\n\nMonitoring and managing behaviour patterns of user access and data access are critical parts of Zero Trust. Trend Micro\u2019s XDR solution offers automated detection and responses through machine learning and big data analysis. XDR automated response enforces consistent security policy while aligning to enterprise risk management.\n\nSince XDR is constantly collecting and correlating data, it establishes a continuous assessment pillar of the Zero Trust strategy. This means that even after you\u2019ve approved initial access for an endpoint, that asset will continually be reviewed and reassessed to ensure it remains uncompromised.\n\nAll businesses should strive for a foundational level of Zero Trust. To address the complexity of risk, the process needs to be treated like a lifecycle, in which continuous visibility and assessment are used to discover an organisation\u2019s attack surface, assess the risk, and then mitigate the risk. At Trend Micro, we advise our customers to take Zero Trust implementation one step at a time.