Hackers Compromise Mimecast Certificate for Secure Microsoft 365 Connections
Mimecast Confirms Breach Linked to SolarWinds Cyberattack Mimecast, a prominent cloud-based email management provider, disclosed on Tuesday that a “sophisticated threat actor” had compromised one of its digital certificates integral to secure connections with Microsoft 365 Exchange. This alarming revelation emerged after Microsoft notified Mimecast of potential vulnerabilities. In response,…