For more information, see Use Microsoft cloud-provided protection in Microsoft Defender Antivirus.įor a list of recent security intelligence updates, see Security intelligence updates for Microsoft Defender Antivirus and other Microsoft antimalware.Įngine updates are included with security intelligence updates and are released on a monthly cadence.
Security intelligence updates occur on a scheduled cadence (configurable via policy).
System Center Endpoint Protection: KB2461484Ĭloud-delivered protection is always on and requires an active connection to the Internet to function.Microsoft Defender Antivirus: KB2267602.Confirm it, Ransomware Shield adds the app to your Exceptions list itself and there's nothing else to do.Ĭontrolled Folders could be better, then, but it did its core job, keeping us safe from a threat that the antivirus engine missed.Updates are released under the following KBs: Controlled Folders simply blocks everything it doesn't recognize, and previously we've found some legitimate programs refused to run until we manually added them to an Exceptions list.Īvast's Ransomware Shield is smarter, more like a firewall when it detects an unauthorized access to a folder, it alerts you, but also asks if the process is legitimate. This time, Defender displayed an alert when our ransomware tried to access the folder, and it wasn't able to encrypt any documents. We turned Controlled Folders on, added our test folder to the list, and ran the ransomware simulator again. Fortunately, Defender has a second layer of protection in its Controlled Folders feature (Security Center > Virus & Threat Protection > Manage Ransomware Protection.) Turn this on and it automatically blocks unauthorized apps from accessing key document folders (Documents, Pictures, Videos, Music, more) and you can easily add more.
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