Microsoft announced that it has disrupted a Vanilla Tempest campaign whose goal was the deployment of Rhysida ransomware.

The name on the security certificate is invalid or does not match the name of the target site webmail.domain.com. Outlook is unable to connect to the proxy Server ...

Tens of thousands of secure websites might start to display certificate errors to their visitors in January, when Microsoft plans to stop trusting 20 certificate authorities (CAs) from around the ...

The Microsoft Exchange admin portal is currently inaccessible from some browsers after Microsoft forgot to renew the SSL certificate for the website. Starting at 8 AM EST today, Microsoft Exchange ...

When VeriSign Inc. disclosed last week that it had issued two digital certificates to an individual who fraudulently claimed to be a Microsoft Corp. employee, the ...

Microsoft Sharepoint and OneDrive for Business were briefly interrupted today after a German TLS certificate was mistakenly added to the main .com domains for the Microsoft 365 services. At ...

Microsoft gave notice this week that currently used Transport Layer Security (TLS) certificates associated with Microsoft 365 services and Azure Communication Services "will expire in May 2025." In ...

Two digital certificates have been mistakenly issued in Microsoft's name that could be used by virus writers to fool people into running harmful programs, the software giant warned Thursday. According ...

Microsoft has once again been caught allowing its legitimate digital certificates to sign malware in the wild, a lapse that allows the malicious files to pass strict security checks designed to ...