Redmond Magazine

Attackers Using Excel Read-Only Files To Obscure Malware

Attackers can attempt to hide malicious payloads in Excel files sent by e-mail by using a standard Excel feature, according to a Tuesday post by Mimecast researchers. It turns out that automatic ...
Threat Post

Mimecast Certificate Hacked in Microsoft Email Supply-Chain Attack

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 ...
MCPmag

Researchers Warn of Malware Threat in Excel Read-Only Files

Researchers from Mimecast reported this week that attackers are hiding malicious payloads in Excel files sent by e-mail by using a standard Excel feature. It turns out that automatic encryption of ...
Security

Mimecast Report Finds AI Fuels a new Wave of Human-Targeted Cyberattacks

Threat actors are getting smarter, faster, and far more personal. According to Mimecast’s newly released 2025 Global Threat Intelligence Report, adversaries are increasingly using artificial ...
CRN

Mimecast Acquires Email Security Startup MessageControl

MessageControl will provide customers using productivity apps such as Microsoft 365 with stronger protection against advanced phishing and impersonation attacks, according to Mimecast. Mimecast has ...
Yahoo Finance

Mimecast Eliminates the API Email Security Trade-Off with Complete Threat Detection

LEXINGTON, Mass., March 10, 2026 (GLOBE NEWSWIRE) -- Mimecast, a global leader in managing human and AI risk, today announced that its complete email security protection stack is now available through ...