Spotted in the Wild
Amidst all the Corona Virus chaos, cyber hackers have yet to take a break from their malicious activities, disrupting services and stealing data from various organizations in 2021.
Mimecast, the email management and services provider, had an incident with the SolarWinds hacker group. The hacker group managed to gain access to Mimecast’s network and compromise a digital certificate used to authenticate and encrypt connections between its (Mimecast) systems and Microsoft Office 365. Mimecast advised clients of the threat on 26 January 2021 and that during their investigation it was found that some data may had been exfiltrated.
According to Mimecast: “Our investigation also showed that the threat actor accessed, and potentially exfiltrated, certain encrypted service account credentials created by customers hosted in the United States and the United Kingdom. These credentials establish connections from Mimecast tenants to on-premise and cloud services, which include LDAP, Azure Active Directory, Exchange Web Services, POP3 journaling, and SMTP-authenticated delivery routes.”
Customers using Microsoft 365 integration with Mimecast are to revoke the compromised digital certificate as soon as possible and re-authenticate the connections with a new digital certificate provided by Mimecast.