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, ...

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 ...

Email management provider Mimecast said that hackers have compromised a digital certificate it issued and used it to target select customers who use it to encrypt data they sent and received through ...

Mimecast, a company that makes cloud email management software, disclosed a security incident today, alerting customers that "a sophisticated threat actor" has obtained one of its digital certificates ...

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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 ...