This checklist serves as a guide for businesses to assess their preparedness against ransomware attacks. It outlines critical areas for evaluation, including potential entry points for ransomware, existing defenses, response readiness, and recovery strategies. The document emphasizes the importance of visibility into inbound email sources and the protection of email domains from phishing and spoofing. It also highlights the necessity of implementing Domain-based Message Authentication, Reporting, and Conformance (DMARC) policies to prevent email impersonation. Additionally, the checklist encourages businesses to evaluate their incident response plans, ensure secure backups, and maintain a documented business continuity plan. The document provides statistics on the rising threat of ransomware, noting that over 72% of businesses were affected by attacks in 2023. The checklist aims to help organizations proactively defend against ransomware and effectively recover from potential breaches.