Email security company Mimecast has disclosed today that a "sophisticated threat actor" compromised one of the certificates the company issues for customers to securely connect Microsoft 365 Exchange ...

Email security provider Mimecast says it has been informed by Microsoft that a certificate it issued for authentication of Mimecast Sync and Recover, Continuity Monitor, and IEP products to Microsoft ...

A security certificate issued by Mimecast Services Ltd. that’s used to authenticate some of the company’s products with Microsoft Corp. 365 Exchange Web Services has been hacked. The certificate, ...

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How to create a self-signed digital certificate for VBA macros in Office 365 Your email has been sent Macros in Microsoft Office are blocked for security reasons, but ...