diff --git a/ntoskrnl/include/internal/tag.h b/ntoskrnl/include/internal/tag.h
index 9f86c7cb623..3e838c81abe 100644
--- a/ntoskrnl/include/internal/tag.h
+++ b/ntoskrnl/include/internal/tag.h
@@ -180,6 +180,7 @@
 #define TAG_TOKEN_DYNAMIC     'dTeS'
 #define TAG_SE_HANDLES_TAB    'aHeS'
 #define TAG_SE_DIR_BUFFER     'bDeS'
+#define TAG_SE_PROXY_DATA     'dPoT'
 
 /* LPC Tags */
 #define TAG_LPC_MESSAGE   'McpL'
diff --git a/sdk/include/ndk/setypes.h b/sdk/include/ndk/setypes.h
index 10a500ce041..55e0d8fdab6 100644
--- a/sdk/include/ndk/setypes.h
+++ b/sdk/include/ndk/setypes.h
@@ -108,6 +108,17 @@ typedef struct _TOKEN_ACCESS_INFORMATION
      SE_GROUP_INTEGRITY                                 |   \
      SE_GROUP_INTEGRITY_ENABLED)
 
+//
+// Proxy Class enumeration
+//
+typedef enum _PROXY_CLASS
+{
+    ProxyFull = 0,
+    ProxyService,
+    ProxyTree,
+    ProxyDirectory
+} PROXY_CLASS;
+
 //
 // Audit and Policy Structures
 //
@@ -145,6 +156,28 @@ typedef struct _SE_AUDIT_PROCESS_CREATION_INFO
     POBJECT_NAME_INFORMATION ImageFileName;
 } SE_AUDIT_PROCESS_CREATION_INFO, *PSE_AUDIT_PROCESS_CREATION_INFO;
 
+//
+// Token Audit Data
+//
+typedef struct _SECURITY_TOKEN_AUDIT_DATA
+{
+    ULONG Length;
+    ULONG GrantMask;
+    ULONG DenyMask;
+} SECURITY_TOKEN_AUDIT_DATA, *PSECURITY_TOKEN_AUDIT_DATA;
+
+//
+// Token Proxy Data
+//
+typedef struct _SECURITY_TOKEN_PROXY_DATA
+{
+    ULONG Length;
+    PROXY_CLASS ProxyClass;
+    UNICODE_STRING PathInfo;
+    ULONG ContainerMask;
+    ULONG ObjectMask;
+} SECURITY_TOKEN_PROXY_DATA, *PSECURITY_TOKEN_PROXY_DATA;
+
 //
 // Token and auxiliary data
 //
@@ -176,8 +209,8 @@ typedef struct _TOKEN
     SECURITY_IMPERSONATION_LEVEL ImpersonationLevel;  /* 0x84 */
     ULONG TokenFlags;                                 /* 0x88 */
     BOOLEAN TokenInUse;                               /* 0x8C */
-    PVOID ProxyData;                                  /* 0x90 */
-    PVOID AuditData;                                  /* 0x94 */
+    PSECURITY_TOKEN_PROXY_DATA ProxyData;             /* 0x90 */
+    PSECURITY_TOKEN_AUDIT_DATA AuditData;             /* 0x94 */
     LUID OriginatingLogonSession;                     /* 0x98 */
     ULONG VariablePart;                               /* 0xA0 */
 } TOKEN, *PTOKEN;