DV SSL is also known as domain name verification SSL certificate, which ensures that the confidential information of the website is transmitted from the user’s browser to the server with high-strength encryption and will not be illegally stolen or tampered with. You only need to prove that the domain name you want to protect is owned by you, and you can pass the certification authority (CA) audit. The issuance of domain name verification is fast, but because almost everyone can get a DV SSL certificate, the trust level is low.