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Does Apple detect and warn you about viruses before you open a file?

If there is a virus in a file that I downloaded from the Internet or that was opened from an external drive, does Apple scan for viruses automatically? I remember warning messages in the past but haven't seen one in a while. Hopefully, it just means nothing I've opened was questionable but I hope there aren't any undetected viruses that I don't know about.

MacBook Pro TouchBar and Touch ID

Posted on Mar 15, 2018 8:31 PM

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Does Apple detect and warn you about viruses before you open a file?

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