Brazilian financial services, retail, and e-commerce organizations have become the target of a financially motivated threat actor dubbed Breeze Comet (formerly UNC5669) since 2024. Google Threat Intelligence Group (GTIG) and Mandiant teams described the threat actor as "specializing in manipulating payment systems and banking software in Brazil to conduct fraudulent transfers." The adversary is said to have successfully carried out at least one heist of assets worth tens of thousands of U.S. dollars. The activity overlaps with threat activity clusters tracked by CrowdStrike and Trend Micro under the monikers Plump Spider and SHADOW-AETHER-064. According to CrowdStrike, the e-crime group is operating out of Brazil and has been active since September 2023, monetizing their intrusions by…