"Use a TLS certificate with the SHA-256 or higher hash algorithm. Modern browsers do not trust certificates that use SHA-1."
Continued use of SHA-1 certificates puts your clients' sensitive data at risk and will cause browsers to display warnings. Warnings create mistrust when connecting to a site and can cause clients to avoid your site.
Hashing algorithms are used to generate SSL certificates. Discovery checks your SSL/TLS certificate as well as its issuing intermediate certificate.
Based on current research and DigiCert recommendations, administrators should replace SHA-1 Certificates with SHA-2 Certificates as the risks associated with the SHA-1 hashing algorithm are greater than previously expected. While published findings don't appear to present an immediate danger, we encourage administrators to plan their migration to SHA-2 Certificates as soon as possible.
To learn more, see DigiCert SHA-2 SSL Certificates.
Reissue, renew, or replace all of SHA-1 certificates with SHA-2 certificates. See Switching to SHA-2 for detailed instructions.
DigiCert is the world's leading provider of scalable TLS/SSL, IoT and PKI solutions for identity and encryption. The most innovative companies, including 89% of the Fortune 500 and 97 of the 100 top global banks, choose DigiCert for its expertise in identity and encryption for web servers and Internet of Things devices. DigiCert supports TLS and other digital certificates for PKI deployments at any scale through its certificate lifecycle management solution, CertCentral®. The company is recognized for its enterprise-grade certificate management platform, fast and knowledgeable customer support, and market-leading security solutions. For the latest DigiCert news and updates, visit digicert.com or follow @digicert.
©2020 DigiCert, Inc. All rights reserved. DigiCert, its logo and CertCentral are registered trademarks of DigiCert, Inc. Norton and the Checkmark Logo are trademarks of NortonLifeLock Inc. used under license. Other names may be trademarks of their respective owners.