Microsoft Defender Antivirus uses multiple detection and prevention technologies to deliver accurate, intelligent, and real-time protection. The cloud backend applies heuristics, machine learning, and automated analysis of the file to determine whether the files are malicious or not a threat. When Microsoft Defender Antivirus encounters a suspicious but undetected file, it queries our cloud protection backend. In most enterprise organizations, the settings needed to enable block at first sight are configured with Microsoft Defender Antivirus deployments.
A specified sample submission timeout (such as 50 seconds) and.Block at first sight is enabled when certain security settings are enabled. What is "block at first sight"?īlock at first sight is a threat protection feature of next-generation protection that detects new malware and blocks it within seconds. If you are not an enteprise admin or IT Pro but you have questions about block at first sight, see the Not an enterprise admin or IT Pro? section. This article is intended for enterprise admins and IT Pros who manage security settings for organizations.
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