Generate a line art icon in black depicting a shield with radar lines emanating from it, searching for threats. The shield should symbolize protection, while the radar lines suggest active threat detection. The icon's design must balance simplicity with the ability to convey the function of intrusion detection systems effectively. Ensure that the icon is scalable, recognizable at small sizes, and culturally neutral to be easily understood in a global context.
Vector imageAspect ratio: 1:1
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