The statement said that based on new information that emerged during the investigation of the attack (in particular, the DNS traffic logs), it became clear that the incident affected not 18,000 clients, as previously thought, but only about 100.

Let me remind you that the SolarWinds hack has become one of the largest attacks on the supply chain in history. In December 2020, it became known that unknown attackers had attacked the company and infected its Orion platform with malware. Of [...]

Back in mid-January 2021, representatives of Mimecast warned that an unknown hacker had one of its digital certificates. The attacker then abused it to gain access to some Microsoft 365 customer accounts.

The compromised certificate was used by several of the company’s products (Mimecast Sync and Recover, Continuity Monitor, and IEP) to connect to Microsoft’s infrastructure.

At the same time, it was reported that only 10% of customers used the above products [...]