tls certificates

Johnson Controls has warned that a certificate-handling flaw in several iSTAR door‑controller families can leave panels unable to restore host communication after the default TLS certificate expires — a failure that impacts availability rather than enabling obvious data theft, but which...

Microsoft has told Windows 11 users that they can safely ignore repeated CertEnroll errors that began appearing in Event Viewer after the July 2025 preview updates and widened with the August 2025 Patch Tuesday cumulative, characterizing the entries as a cosmetic logging artifact rather than an...

In a rapidly evolving world filled with cyberattacks, IT vulnerabilities, and incessant threats lurking around every digital corner, keeping your systems fortified against potential breaches is essential. A recent advisory from Hitachi Energy has unveiled a significant vulnerability within its...

In a troubling revelation for users of Microsoft Bookings, a newly discovered vulnerability has opened the door to impersonation attacks, potentially allowing malicious actors to spoof identities, purchase illicit TLS certificates, execute domain name transfers, and even capture user accounts...

Revision Note: V1.0 (May 9, 2017): Advisory published. Summary: Beginning May 9, 2017, Microsoft released updates to Microsoft Edge and Internet Explorer 11 to block sites that are protected with a SHA-1 certificate from loading and displays an invalid certificate warning. This change will only...