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FlutterShell Backdoor Spreads to macOS via Malicious Google and YouTube Ads

FlutterShell Backdoor Spreads to macOS via Malicious Google and YouTube Ads

Ravie LakshmananJun 04, 2026Malvertising / Browser Security Cybersecurity researchers have shed light on a macOS malvertising campaign codenamed Operation FlutterBridge that spreads a new backdoor called FlutterShell. According to Palo Alto Networks Unit 42, the…