This advisory note explores Patch Management as a cornerstone of cyber resilience in the contemporary threat landscape. Delving into the evolution of strategies, it navigates the reader through the delicate balance between swift deployment and meticulous testing. Focusing on the urgency introduced by Zero Day Exploits, the report categorizes threat phases and emphasizes the diminishing risk associated with timely patch deployment. It sheds light on the challenges of delayed patching, especially in critical areas like Operational Technology (OT), and advocates for nuanced risk assessments in diverse IT environments. Concluding with a call to rethink patching strategies, the report underscores the strategic imperatives for bolstering cyber resilience in the face of escalating cyber threats.
1 Introduction / Executive Summary
In many organizations, "accuracy before speed" still applies to patching, emphasizing thorough testing before rapid deployment. What was correct years ago is no longer applicable today due to the changing nature of cybersecurity risks. A more nuanced approach is required, with speed often taking precedence over accuracy.
Flawless software does not exist, especially beyond a certain level of complexity. Despite significant professionalization in software development, test automation, and software development lifecycles (SDLCs) focused on quality improvement and security, thousands of software patches are released each month.
