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This article details the "Midnight Mimosa" campaign, which embeds malicious code directly into the firmware of low-cost MediaTek-based Android devices before they leave the factory. The malware enables persistent control over system functions and fake ad generation without requiring user interaction or app permissions, highlighting a critical vulnerability in the device supply chain rather than end-user behavior. This represents a significant threat to mobile security infrastructure where traditional application-level defenses are insufficient against pre-installed root-level threats.

Source coveringCybersecurity News

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Midnight Mimosa Infects Android Phones Before Users Even Turn Them On

Cybersecurity NewsOctober 12, 20266 min read

Midnight Mimosa is reaching Android phones before their owners even press the power button. The malware arrives inside device firmware, giving its operators a hidden foothold that does not depend on a malicious download, a phishing link, or someone accepting an app permission request. The campaign affects low-cost Android devices from several brands built on MediaTek platforms. Its main purpose appears to be making money through fake advertising activity and residential proxy services, while its system access also allows operators to install apps, remove them, and load new code without asking users. Researchers from Bitdefender identified Midnight Mimosa after their App Anomaly Detection technology flagged a system package behaving unlike a normal…

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