How to defend your organization against malware or ransomware attacks?

A Proactive approach - How to improve cybersecurity within your organization:

This guidance helps private and public sector organizations deal with the effects of malware (which includes ransomware). It recommends steps to take before a malware infection has occurred, but also suggests steps to take if you’re already infected. The following link is a step-by-step guide for your businesses to improve its cybersecurity within the organization: NCSC.