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windows/security/book/application-security-application-isolation.md
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@ -11,7 +11,7 @@ ms.date: 04/09/2024
## Win32 app isolation
Change from Nilanjana Win32 app isolation is a new security feature designed to be the default isolation standard on Windows clients. It's built on [AppContainer](/windows/win32/secauthz/implementing-an-appcontainer), and offers several added security features to help the Windows platform defend against attacks that leverage vulnerabilities in applications or third-party libraries. To isolate their apps, developers can update their applications using Visual Studio.
Win32 app isolation is a new security feature designed to be the default isolation standard on Windows clients. It's built on [AppContainer](/windows/win32/secauthz/implementing-an-appcontainer), and offers several added security features to help the Windows platform defend against attacks that leverage vulnerabilities in applications or third-party libraries. To isolate their apps, developers can update their applications using Visual Studio.
Win32 app isolation follows a two-step process. In the first step, the Win32 application is launched as a low-integrity process using AppContainer, which is recognized as a security boundary by Microsoft. Consequently, the process is limited to a specific set of Windows APIs by default and is unable to inject code into any process operating at a higher integrity level.