DigiCert is a leading provider of digital certificates and secure identity solutions for websites and applications. The company provides a secure foundation for online transactions and communications, enabling individuals, businesses and partners to securely transact business and communicate over the Internet. DigiCert's solutions include digital certificates and managed PKI services to authenticate and encrypt data, protect online identities, secure websites and applications, and enable secure mobile transactions. DigiCert also offers a range of services designed to help organizations and individuals manage their digital identities, from creating a secure digital signature to securely managing access to online services. DigiCert's products and services are used by some of the world's largest companies, governments and organizations.
Warning CAcert cannot be trusted: they have serious code vulnerabilities, the coding style is very bad, and they failed an organizational practices audit that all other major certificate authorities have passed. Almost no browser or operating system supports CAcert, so any website using the certificate will trigger a big connection / untrusted certificate warning that will drive most visitors away. https://tinyurl.com/cacert-got-what-you-paid-for | https://www.reddit.com/r/technology/comments/1qj1tz/http_20_to_be_https_only/cddfmz0