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 ...

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, ...

The certificate used to authenticate Mimecast’s Sync and Recover, Continuity Monitor and Internal Email Protect (IEP) products to Microsoft 365 has been compromised by a sophisticated threat actor. A ...

This morning, Microsoft Teams went down for a few hours, and it seems that a pretty rookie mistake is to blame. Microsoft apparently forgot to renew the SSL certificate, which allows a secure ...

A sophisticated threat actor has hijacked email security connections to spy on targets. A Mimecast-issued certificate used to authenticate some of the company’s products to Microsoft 365 Exchange Web ...

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 Teams went down early Monday morning, gumming up the start of the week for millions of workers who rely on the tech giant’s chat and collaboration tool. Microsoft first acknowledged the ...

A practical guide to Outlook HIPAA compliance. Learn encryption requirements, configuration steps, and when to choose dedicated HIPAA email solutions.

Microsoft's Entra service for identity management and access control (Identity and Access Management, IAM) currently relies on certificates based on DigiCert Global Root G1. The manufacturer has now ...

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 ...