Microsoft Defender will also run quick scans of your device on a daily basis, in case anything manages to elude the real-time protection. Microsoft Defender's real-time anti-malware protection runs whenever your device is on, keeping an eye out for malicious activity.
When you first set-up Microsoft Defender on your device we'll run an initial scan to make sure you're starting off clean. Note: Microsoft Defender currently offers anti-malware only on Windows, Mac, and Android.
