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Source: Announcing Microsoft Defender ATP for Mac

We are thrilled by the response of our customers and the industry to Microsoft Defender ATP for Mac, our own solution for protecting customers across operating systems. Since opening the limited preview, we have been listening to customer feedback and working continuously to enhance the product.

Starting today, Microsoft Defender ATP customers who have turned on preview features can access Microsoft Defender ATP for Mac via the onboarding section in Microsoft Defender Security Center.
Quoted from : Microsoft Defender ATP for Mac now in open public preview
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