The FBI IC3 report of 2020 classified Ransomware as the most financially damaging cybercrime of the year, with no major improvement in 2021. DMARC can make this impossible claim a possibility for domain owners! DMARC is also known as the first line of defense against ransomware attacks. The threat of ransomware attacks perpetrated by using fake email messages results from the use of spoofing tactics on your domain, and either way can potentially result in your business going under, your customers losing trust, and loss of data and assets.
Source: https://thehackernews.com/2021/06/dmarc-first-line-of-defense-against.html