Microsoft Digital Defense Report
Ruby Sleet, Onyx Sleet and Opal Sleet targeting Russian aerospace institute, university, and diplomatic entities (March 2023) · Microsoft Digital Defense Report 2023
In March 2023, Ruby Sleet compromised a Russian aerospace research institute, while Onyx Sleet compromised a device belonging to a Russian university, and an attacker account likely attributed to Opal Sleet sent phishing emails to accounts belonging to Russian diplomatic government entities.