In the digital era, businesses face the constant threat of malware attacks which can result in significant operational and financial setbacks. This document emphasizes the importance of building a cost-effective defense against malware, using existing security technologies and expertise. It highlights the need for businesses to assess the impact of a potential malware incident and allocate an appropriate budget for mitigation. Additionally, it suggests simple yet effective practices, such as staff training and user device hardening, that can be implemented by organizations of all sizes.