A sophisticated macOS malware loader platform known as “ReaderUpdate” has significantly evolved its capabilities, with researchers identifying new variants written in Nim and Rust programming languages. Despite being active since at least 2020, this threat has remained largely undetected by many security vendors. Initially distributed as a compiled Python binary, ReaderUpdate has expanded its arsenal […]
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ESET researchers have uncovered new activity from the China-aligned APT group FamousSparrow, revealing two previously undocumented versions of their custom SparrowDoor backdoor. The group, thought to be inactive since 2022, compromised a US-based trade organization in the financial sector and a Mexican research institute in July 2024. The first variant closely resembles the CrowDoor malware […]
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