From afae51855042cfe4c59a72fab5c65086cd0cf566 Mon Sep 17 00:00:00 2001 From: Kim Klein Date: Thu, 17 Jun 2021 16:23:28 -0700 Subject: [PATCH 1/3] Added FIle Rule Precedence Order --- .../select-types-of-rules-to-create.md | 3 +++ 1 file changed, 3 insertions(+) diff --git a/windows/security/threat-protection/windows-defender-application-control/select-types-of-rules-to-create.md b/windows/security/threat-protection/windows-defender-application-control/select-types-of-rules-to-create.md index 1f5068600a..e03aed4e50 100644 --- a/windows/security/threat-protection/windows-defender-application-control/select-types-of-rules-to-create.md +++ b/windows/security/threat-protection/windows-defender-application-control/select-types-of-rules-to-create.md @@ -120,6 +120,9 @@ To create the WDAC policy, they build a reference server on their standard hardw As part of normal operations, they will eventually install software updates, or perhaps add software from the same software providers. Because the "Publisher" remains the same on those updates and software, they will not need to update their WDAC policy. If the unsigned, internal application is updated, they must also update the WDAC policy to allow the new version. +## File rule precedence order +WDAC has a built in file rule conflict logic that translates to as precedence order. It will first processes all explicit deny rules it finds. Then, it will process all explicit allow rules. If no deny or allow rule exists, WDAC will check for [Managed Installer EA](deploy-wdac-policies-with-managed-installer.md). Lastly, if none of these exists, WDAC will fall back on [ISG](use-windows-defender-application-control-with-intelligent-security-graph.md). + ## More information about filepath rules Filepath rules do not provide the same security guarantees that explicit signer rules do, as they are based on mutable access permissions. Filepath rules are best suited for environments where most users are running as standard rather than admin. Path rules are best suited to allow paths that you expect will remain admin-writeable only. You may want to avoid path rules for directories where standard users can modify ACLs on the folder. From 503f2da0abecffe98fe95c5f564311dc13949ce0 Mon Sep 17 00:00:00 2001 From: Kim Klein Date: Fri, 18 Jun 2021 10:18:23 -0700 Subject: [PATCH 2/3] Added the suggested edits. --- .../select-types-of-rules-to-create.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/windows/security/threat-protection/windows-defender-application-control/select-types-of-rules-to-create.md b/windows/security/threat-protection/windows-defender-application-control/select-types-of-rules-to-create.md index e03aed4e50..99f5695221 100644 --- a/windows/security/threat-protection/windows-defender-application-control/select-types-of-rules-to-create.md +++ b/windows/security/threat-protection/windows-defender-application-control/select-types-of-rules-to-create.md @@ -121,7 +121,7 @@ To create the WDAC policy, they build a reference server on their standard hardw As part of normal operations, they will eventually install software updates, or perhaps add software from the same software providers. Because the "Publisher" remains the same on those updates and software, they will not need to update their WDAC policy. If the unsigned, internal application is updated, they must also update the WDAC policy to allow the new version. ## File rule precedence order -WDAC has a built in file rule conflict logic that translates to as precedence order. It will first processes all explicit deny rules it finds. Then, it will process all explicit allow rules. If no deny or allow rule exists, WDAC will check for [Managed Installer EA](deploy-wdac-policies-with-managed-installer.md). Lastly, if none of these exists, WDAC will fall back on [ISG](use-windows-defender-application-control-with-intelligent-security-graph.md). +WDAC has a built-in file rule conflict logic that translates to precedence order. It will first processes all explicit deny rules it finds. Then, it will process all explicit allow rules. If no deny or allow rule exists, WDAC will check for [Managed Installer EA](deploy-wdac-policies-with-managed-installer.md). Lastly, if none of these exists, WDAC will fall back on [ISG](use-windows-defender-application-control-with-intelligent-security-graph.md). ## More information about filepath rules From 98918dc567478c00c37821b66c79b0ba1107fe72 Mon Sep 17 00:00:00 2001 From: Daniel Simpson Date: Mon, 21 Jun 2021 09:10:40 -0700 Subject: [PATCH 3/3] Update windows/security/threat-protection/windows-defender-application-control/select-types-of-rules-to-create.md Co-authored-by: JohanFreelancer9 <48568725+JohanFreelancer9@users.noreply.github.com> --- .../select-types-of-rules-to-create.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/windows/security/threat-protection/windows-defender-application-control/select-types-of-rules-to-create.md b/windows/security/threat-protection/windows-defender-application-control/select-types-of-rules-to-create.md index 99f5695221..b06abc4571 100644 --- a/windows/security/threat-protection/windows-defender-application-control/select-types-of-rules-to-create.md +++ b/windows/security/threat-protection/windows-defender-application-control/select-types-of-rules-to-create.md @@ -121,7 +121,7 @@ To create the WDAC policy, they build a reference server on their standard hardw As part of normal operations, they will eventually install software updates, or perhaps add software from the same software providers. Because the "Publisher" remains the same on those updates and software, they will not need to update their WDAC policy. If the unsigned, internal application is updated, they must also update the WDAC policy to allow the new version. ## File rule precedence order -WDAC has a built-in file rule conflict logic that translates to precedence order. It will first processes all explicit deny rules it finds. Then, it will process all explicit allow rules. If no deny or allow rule exists, WDAC will check for [Managed Installer EA](deploy-wdac-policies-with-managed-installer.md). Lastly, if none of these exists, WDAC will fall back on [ISG](use-windows-defender-application-control-with-intelligent-security-graph.md). +WDAC has a built-in file rule conflict logic that translates to precedence order. It will first process all explicit deny rules it finds. Then, it will process all explicit allow rules. If no deny or allow rule exists, WDAC will check for [Managed Installer EA](deploy-wdac-policies-with-managed-installer.md). Lastly, if none of these exists, WDAC will fall back on [ISG](use-windows-defender-application-control-with-intelligent-security-graph.md). ## More information about filepath rules