diff --git a/authfs/service/authfs_service.rc b/authfs/service/authfs_service.rc
index 409e91c..bc67c83 100644
--- a/authfs/service/authfs_service.rc
+++ b/authfs/service/authfs_service.rc
@@ -3,3 +3,4 @@
     socket authfs_service stream 0666 root system
     # SYS_ADMIN capability allows to mount FUSE filesystem
     capabilities SYS_ADMIN
+    user root
diff --git a/compos/common/compos_client.rs b/compos/common/compos_client.rs
index bf4c678..bc6ab25 100644
--- a/compos/common/compos_client.rs
+++ b/compos/common/compos_client.rs
@@ -53,6 +53,8 @@
 /// Parameters to be used when creating a virtual machine instance.
 #[derive(Default, Debug, Clone)]
 pub struct VmParameters {
+    /// The name of VM for identifying.
+    pub name: String,
     /// Whether the VM should be debuggable.
     pub debug_mode: bool,
     /// CPU topology of the VM. Defaults to 1 vCPU.
@@ -115,7 +117,7 @@
         };
 
         let config = VirtualMachineConfig::AppConfig(VirtualMachineAppConfig {
-            name: String::from("Compos"),
+            name: parameters.name.clone(),
             apk: Some(apk_fd),
             idsig: Some(idsig_fd),
             instanceImage: Some(instance_fd),
diff --git a/compos/composd/src/instance_manager.rs b/compos/composd/src/instance_manager.rs
index 2ce12f8..d7c0f9a 100644
--- a/compos/composd/src/instance_manager.rs
+++ b/compos/composd/src/instance_manager.rs
@@ -41,12 +41,14 @@
 
     pub fn start_current_instance(&self) -> Result<CompOsInstance> {
         let mut vm_parameters = new_vm_parameters()?;
+        vm_parameters.name = String::from("Composd");
         vm_parameters.prefer_staged = true;
         self.start_instance(CURRENT_INSTANCE_DIR, vm_parameters)
     }
 
     pub fn start_test_instance(&self, prefer_staged: bool) -> Result<CompOsInstance> {
         let mut vm_parameters = new_vm_parameters()?;
+        vm_parameters.name = String::from("ComposdTest");
         vm_parameters.debug_mode = true;
         vm_parameters.prefer_staged = prefer_staged;
         self.start_instance(TEST_INSTANCE_DIR, vm_parameters)
diff --git a/compos/verify/verify.rs b/compos/verify/verify.rs
index 13e9292..952e9c7 100644
--- a/compos/verify/verify.rs
+++ b/compos/verify/verify.rs
@@ -115,6 +115,7 @@
         &idsig_manifest_apk,
         &idsig_manifest_ext_apk,
         &VmParameters {
+            name: String::from("ComposVerify"),
             cpu_topology: VmCpuTopology::OneCpu, // This VM runs very little work at boot
             debug_mode: args.debug,
             ..Default::default()
diff --git a/microdroid_manager/microdroid_manager.rc b/microdroid_manager/microdroid_manager.rc
index 97d14b5..e257547 100644
--- a/microdroid_manager/microdroid_manager.rc
+++ b/microdroid_manager/microdroid_manager.rc
@@ -11,4 +11,5 @@
     # CAP_SETCAP is required to allow microdroid_manager to drop capabilities
     #   before executing the payload
     capabilities AUDIT_CONTROL SYS_ADMIN SYS_BOOT SETPCAP
+    user root
     socket vm_payload_service stream 0666 system system