A digital certificate is a crucial component in online security. Digital certificates are used to verify the identity of a website or organization, ensuring that user information is encrypted and secure when transmitted over the Internet. These certificates are typically issued by trusted organizations known as Certificate Authorities (CAs), such as Let's Encrypt, DigiCert, or Comodo. When a website uses HTTPS, the digital certificate ensures that users are connecting to a legitimate and secure website. The use of digital certificates helps prevent network attacks such as phishing and man-in-the-middle attacks.