Certificates confirm not only that the server is presenting the website you wanted to visit, but also that a certificate authority has confirmed that the company or organization behind the site is ...

Microsoft warns Secure Boot certificates will expire June 2026, updating PCs automatically to maintain boot-level security.

Microsoft Windows doesn’t have a good way to handle digital certificates that have been tampered with, Roel Schouwenberg, senior antivirus researcher at Kaspersky Lab, said Tuesday at the company’s ...

Twitter is having trouble again with a digital certificate that secures communications to its Web site, which has been causing trouble for third-party applications that integrate with it, but the ...