In the fight against fake sites, phishing and fraud, trustworthy SSL certificates are essential. This is why domain-validated certificates can be dangerous. Certificate Authorities (CAs) will issue a domain-validated certificate to anyone who is listed as the domain admin contact in the WHOIS record of a domain name. They just send an email to the contact email address and that’s it.
It is the lowest level of authentication used to validate SSL certificates. Higher levels include organizationally-validated and extended validation certificates which require more detailed checks.