The Sectigo guarantee is a financial commitment from Sectigo, the Certification Authority (CA), aimed at protecting the end user.

It applies only if the user suffers a financial loss due to a validation error by Sectigo when issuing the certificate.

It does not cover security vulnerabilities in your server or misconfigurations on your part.

The higher the validation level (DV < OV < EV), the higher the amount of the Sectigo guarantee is generally.