diff --git a/java-securitycenter/README.md b/java-securitycenter/README.md
index b4398a21015b..fb2ddfc64ff9 100644
--- a/java-securitycenter/README.md
+++ b/java-securitycenter/README.md
@@ -19,20 +19,20 @@ If you are using Maven, add this to your pom.xml file:
 <dependency>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-securitycenter</artifactId>
-  <version>2.14.0</version>
+  <version>2.15.0</version>
 </dependency>
 ```
 
 If you are using Gradle without BOM, add this to your dependencies:
 
 ```Groovy
-implementation 'com.google.cloud:google-cloud-securitycenter:2.14.0'
+implementation 'com.google.cloud:google-cloud-securitycenter:2.15.0'
 ```
 
 If you are using SBT, add this to your dependencies:
 
 ```Scala
-libraryDependencies += "com.google.cloud" % "google-cloud-securitycenter" % "2.14.0"
+libraryDependencies += "com.google.cloud" % "google-cloud-securitycenter" % "2.15.0"
 ```
 
 ## Authentication
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/Access.java b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/Access.java
index af73e419b335..f1fc66341106 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/Access.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/Access.java
@@ -46,6 +46,7 @@ private Access() {
     principalSubject_ = "";
     serviceAccountKeyName_ = "";
     serviceAccountDelegationInfo_ = java.util.Collections.emptyList();
+    userName_ = "";
   }
 
   @java.lang.Override
@@ -238,7 +239,7 @@ public com.google.cloud.securitycenter.v1.GeolocationOrBuilder getCallerIpGeoOrB
    *
    *
    * <pre>
-   * What kind of user agent is associated, e.g. operating system shells,
+   * What kind of user agent is associated, for example operating system shells,
    * embedded or stand-alone applications, etc.
    * </pre>
    *
@@ -262,7 +263,7 @@ public java.lang.String getUserAgentFamily() {
    *
    *
    * <pre>
-   * What kind of user agent is associated, e.g. operating system shells,
+   * What kind of user agent is associated, for example operating system shells,
    * embedded or stand-alone applications, etc.
    * </pre>
    *
@@ -603,6 +604,67 @@ public int getServiceAccountDelegationInfoCount() {
     return serviceAccountDelegationInfo_.get(index);
   }
 
+  public static final int USER_NAME_FIELD_NUMBER = 11;
+  private volatile java.lang.Object userName_;
+  /**
+   *
+   *
+   * <pre>
+   * A string that represents the username of a user, user account, or other
+   * entity involved in the access event. What the entity is and what its role
+   * in the access event is depends on the finding that this field appears in.
+   * The entity is likely not an IAM principal, but could be a user that is
+   * logged into an operating system, if the finding is VM-related, or a user
+   * that is logged into some type of application that is involved in the
+   * access event.
+   * </pre>
+   *
+   * <code>string user_name = 11;</code>
+   *
+   * @return The userName.
+   */
+  @java.lang.Override
+  public java.lang.String getUserName() {
+    java.lang.Object ref = userName_;
+    if (ref instanceof java.lang.String) {
+      return (java.lang.String) ref;
+    } else {
+      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+      java.lang.String s = bs.toStringUtf8();
+      userName_ = s;
+      return s;
+    }
+  }
+  /**
+   *
+   *
+   * <pre>
+   * A string that represents the username of a user, user account, or other
+   * entity involved in the access event. What the entity is and what its role
+   * in the access event is depends on the finding that this field appears in.
+   * The entity is likely not an IAM principal, but could be a user that is
+   * logged into an operating system, if the finding is VM-related, or a user
+   * that is logged into some type of application that is involved in the
+   * access event.
+   * </pre>
+   *
+   * <code>string user_name = 11;</code>
+   *
+   * @return The bytes for userName.
+   */
+  @java.lang.Override
+  public com.google.protobuf.ByteString getUserNameBytes() {
+    java.lang.Object ref = userName_;
+    if (ref instanceof java.lang.String) {
+      com.google.protobuf.ByteString b =
+          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+      userName_ = b;
+      return b;
+    } else {
+      return (com.google.protobuf.ByteString) ref;
+    }
+  }
+
   private byte memoizedIsInitialized = -1;
 
   @java.lang.Override
@@ -644,6 +706,9 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     for (int i = 0; i < serviceAccountDelegationInfo_.size(); i++) {
       output.writeMessage(9, serviceAccountDelegationInfo_.get(i));
     }
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(userName_)) {
+      com.google.protobuf.GeneratedMessageV3.writeString(output, 11, userName_);
+    }
     getUnknownFields().writeTo(output);
   }
 
@@ -682,6 +747,9 @@ public int getSerializedSize() {
           com.google.protobuf.CodedOutputStream.computeMessageSize(
               9, serviceAccountDelegationInfo_.get(i));
     }
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(userName_)) {
+      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(11, userName_);
+    }
     size += getUnknownFields().getSerializedSize();
     memoizedSize = size;
     return size;
@@ -711,6 +779,7 @@ public boolean equals(final java.lang.Object obj) {
     if (!getServiceAccountKeyName().equals(other.getServiceAccountKeyName())) return false;
     if (!getServiceAccountDelegationInfoList().equals(other.getServiceAccountDelegationInfoList()))
       return false;
+    if (!getUserName().equals(other.getUserName())) return false;
     if (!getUnknownFields().equals(other.getUnknownFields())) return false;
     return true;
   }
@@ -744,6 +813,8 @@ public int hashCode() {
       hash = (37 * hash) + SERVICE_ACCOUNT_DELEGATION_INFO_FIELD_NUMBER;
       hash = (53 * hash) + getServiceAccountDelegationInfoList().hashCode();
     }
+    hash = (37 * hash) + USER_NAME_FIELD_NUMBER;
+    hash = (53 * hash) + getUserName().hashCode();
     hash = (29 * hash) + getUnknownFields().hashCode();
     memoizedHashCode = hash;
     return hash;
@@ -909,6 +980,8 @@ public Builder clear() {
         serviceAccountDelegationInfoBuilder_.clear();
       }
       bitField0_ = (bitField0_ & ~0x00000001);
+      userName_ = "";
+
       return this;
     }
 
@@ -959,6 +1032,7 @@ public com.google.cloud.securitycenter.v1.Access buildPartial() {
       } else {
         result.serviceAccountDelegationInfo_ = serviceAccountDelegationInfoBuilder_.build();
       }
+      result.userName_ = userName_;
       onBuilt();
       return result;
     }
@@ -1067,6 +1141,10 @@ public Builder mergeFrom(com.google.cloud.securitycenter.v1.Access other) {
           }
         }
       }
+      if (!other.getUserName().isEmpty()) {
+        userName_ = other.userName_;
+        onChanged();
+      }
       this.mergeUnknownFields(other.getUnknownFields());
       onChanged();
       return this;
@@ -1155,6 +1233,12 @@ public Builder mergeFrom(
                 }
                 break;
               } // case 74
+            case 90:
+              {
+                userName_ = input.readStringRequireUtf8();
+
+                break;
+              } // case 90
             default:
               {
                 if (!super.parseUnknownField(input, extensionRegistry, tag)) {
@@ -1607,7 +1691,7 @@ public com.google.cloud.securitycenter.v1.GeolocationOrBuilder getCallerIpGeoOrB
      *
      *
      * <pre>
-     * What kind of user agent is associated, e.g. operating system shells,
+     * What kind of user agent is associated, for example operating system shells,
      * embedded or stand-alone applications, etc.
      * </pre>
      *
@@ -1630,7 +1714,7 @@ public java.lang.String getUserAgentFamily() {
      *
      *
      * <pre>
-     * What kind of user agent is associated, e.g. operating system shells,
+     * What kind of user agent is associated, for example operating system shells,
      * embedded or stand-alone applications, etc.
      * </pre>
      *
@@ -1653,7 +1737,7 @@ public com.google.protobuf.ByteString getUserAgentFamilyBytes() {
      *
      *
      * <pre>
-     * What kind of user agent is associated, e.g. operating system shells,
+     * What kind of user agent is associated, for example operating system shells,
      * embedded or stand-alone applications, etc.
      * </pre>
      *
@@ -1675,7 +1759,7 @@ public Builder setUserAgentFamily(java.lang.String value) {
      *
      *
      * <pre>
-     * What kind of user agent is associated, e.g. operating system shells,
+     * What kind of user agent is associated, for example operating system shells,
      * embedded or stand-alone applications, etc.
      * </pre>
      *
@@ -1693,7 +1777,7 @@ public Builder clearUserAgentFamily() {
      *
      *
      * <pre>
-     * What kind of user agent is associated, e.g. operating system shells,
+     * What kind of user agent is associated, for example operating system shells,
      * embedded or stand-alone applications, etc.
      * </pre>
      *
@@ -2669,6 +2753,142 @@ public Builder removeServiceAccountDelegationInfo(int index) {
       return serviceAccountDelegationInfoBuilder_;
     }
 
+    private java.lang.Object userName_ = "";
+    /**
+     *
+     *
+     * <pre>
+     * A string that represents the username of a user, user account, or other
+     * entity involved in the access event. What the entity is and what its role
+     * in the access event is depends on the finding that this field appears in.
+     * The entity is likely not an IAM principal, but could be a user that is
+     * logged into an operating system, if the finding is VM-related, or a user
+     * that is logged into some type of application that is involved in the
+     * access event.
+     * </pre>
+     *
+     * <code>string user_name = 11;</code>
+     *
+     * @return The userName.
+     */
+    public java.lang.String getUserName() {
+      java.lang.Object ref = userName_;
+      if (!(ref instanceof java.lang.String)) {
+        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        userName_ = s;
+        return s;
+      } else {
+        return (java.lang.String) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * A string that represents the username of a user, user account, or other
+     * entity involved in the access event. What the entity is and what its role
+     * in the access event is depends on the finding that this field appears in.
+     * The entity is likely not an IAM principal, but could be a user that is
+     * logged into an operating system, if the finding is VM-related, or a user
+     * that is logged into some type of application that is involved in the
+     * access event.
+     * </pre>
+     *
+     * <code>string user_name = 11;</code>
+     *
+     * @return The bytes for userName.
+     */
+    public com.google.protobuf.ByteString getUserNameBytes() {
+      java.lang.Object ref = userName_;
+      if (ref instanceof String) {
+        com.google.protobuf.ByteString b =
+            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+        userName_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * A string that represents the username of a user, user account, or other
+     * entity involved in the access event. What the entity is and what its role
+     * in the access event is depends on the finding that this field appears in.
+     * The entity is likely not an IAM principal, but could be a user that is
+     * logged into an operating system, if the finding is VM-related, or a user
+     * that is logged into some type of application that is involved in the
+     * access event.
+     * </pre>
+     *
+     * <code>string user_name = 11;</code>
+     *
+     * @param value The userName to set.
+     * @return This builder for chaining.
+     */
+    public Builder setUserName(java.lang.String value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+
+      userName_ = value;
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * A string that represents the username of a user, user account, or other
+     * entity involved in the access event. What the entity is and what its role
+     * in the access event is depends on the finding that this field appears in.
+     * The entity is likely not an IAM principal, but could be a user that is
+     * logged into an operating system, if the finding is VM-related, or a user
+     * that is logged into some type of application that is involved in the
+     * access event.
+     * </pre>
+     *
+     * <code>string user_name = 11;</code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearUserName() {
+
+      userName_ = getDefaultInstance().getUserName();
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * A string that represents the username of a user, user account, or other
+     * entity involved in the access event. What the entity is and what its role
+     * in the access event is depends on the finding that this field appears in.
+     * The entity is likely not an IAM principal, but could be a user that is
+     * logged into an operating system, if the finding is VM-related, or a user
+     * that is logged into some type of application that is involved in the
+     * access event.
+     * </pre>
+     *
+     * <code>string user_name = 11;</code>
+     *
+     * @param value The bytes for userName to set.
+     * @return This builder for chaining.
+     */
+    public Builder setUserNameBytes(com.google.protobuf.ByteString value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      checkByteStringIsUtf8(value);
+
+      userName_ = value;
+      onChanged();
+      return this;
+    }
+
     @java.lang.Override
     public final Builder setUnknownFields(final com.google.protobuf.UnknownFieldSet unknownFields) {
       return super.setUnknownFields(unknownFields);
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/AccessOrBuilder.java b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/AccessOrBuilder.java
index a8a4b86d3df4..0f9b710d1b2a 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/AccessOrBuilder.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/AccessOrBuilder.java
@@ -124,7 +124,7 @@ public interface AccessOrBuilder
    *
    *
    * <pre>
-   * What kind of user agent is associated, e.g. operating system shells,
+   * What kind of user agent is associated, for example operating system shells,
    * embedded or stand-alone applications, etc.
    * </pre>
    *
@@ -137,7 +137,7 @@ public interface AccessOrBuilder
    *
    *
    * <pre>
-   * What kind of user agent is associated, e.g. operating system shells,
+   * What kind of user agent is associated, for example operating system shells,
    * embedded or stand-alone applications, etc.
    * </pre>
    *
@@ -351,4 +351,41 @@ com.google.cloud.securitycenter.v1.ServiceAccountDelegationInfo getServiceAccoun
    */
   com.google.cloud.securitycenter.v1.ServiceAccountDelegationInfoOrBuilder
       getServiceAccountDelegationInfoOrBuilder(int index);
+
+  /**
+   *
+   *
+   * <pre>
+   * A string that represents the username of a user, user account, or other
+   * entity involved in the access event. What the entity is and what its role
+   * in the access event is depends on the finding that this field appears in.
+   * The entity is likely not an IAM principal, but could be a user that is
+   * logged into an operating system, if the finding is VM-related, or a user
+   * that is logged into some type of application that is involved in the
+   * access event.
+   * </pre>
+   *
+   * <code>string user_name = 11;</code>
+   *
+   * @return The userName.
+   */
+  java.lang.String getUserName();
+  /**
+   *
+   *
+   * <pre>
+   * A string that represents the username of a user, user account, or other
+   * entity involved in the access event. What the entity is and what its role
+   * in the access event is depends on the finding that this field appears in.
+   * The entity is likely not an IAM principal, but could be a user that is
+   * logged into an operating system, if the finding is VM-related, or a user
+   * that is logged into some type of application that is involved in the
+   * access event.
+   * </pre>
+   *
+   * <code>string user_name = 11;</code>
+   *
+   * @return The bytes for userName.
+   */
+  com.google.protobuf.ByteString getUserNameBytes();
 }
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/AccessProto.java b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/AccessProto.java
index 93ae5a0fee69..5c0979a76602 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/AccessProto.java
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/AccessProto.java
@@ -49,7 +49,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
   static {
     java.lang.String[] descriptorData = {
       "\n+google/cloud/securitycenter/v1/access."
-          + "proto\022\036google.cloud.securitycenter.v1\"\342\002"
+          + "proto\022\036google.cloud.securitycenter.v1\"\365\002"
           + "\n\006Access\022\027\n\017principal_email\030\001 \001(\t\022\021\n\tcal"
           + "ler_ip\030\002 \001(\t\022B\n\rcaller_ip_geo\030\003 \001(\0132+.go"
           + "ogle.cloud.securitycenter.v1.Geolocation"
@@ -58,16 +58,17 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
           + "pal_subject\030\007 \001(\t\022 \n\030service_account_key"
           + "_name\030\010 \001(\t\022e\n\037service_account_delegatio"
           + "n_info\030\t \003(\0132<.google.cloud.securitycent"
-          + "er.v1.ServiceAccountDelegationInfo\"R\n\034Se"
-          + "rviceAccountDelegationInfo\022\027\n\017principal_"
-          + "email\030\001 \001(\t\022\031\n\021principal_subject\030\002 \001(\t\"\""
-          + "\n\013Geolocation\022\023\n\013region_code\030\001 \001(\tB\347\001\n\"c"
-          + "om.google.cloud.securitycenter.v1B\013Acces"
-          + "sProtoP\001ZLgoogle.golang.org/genproto/goo"
-          + "gleapis/cloud/securitycenter/v1;security"
-          + "center\252\002\036Google.Cloud.SecurityCenter.V1\312"
-          + "\002\036Google\\Cloud\\SecurityCenter\\V1\352\002!Googl"
-          + "e::Cloud::SecurityCenter::V1b\006proto3"
+          + "er.v1.ServiceAccountDelegationInfo\022\021\n\tus"
+          + "er_name\030\013 \001(\t\"R\n\034ServiceAccountDelegatio"
+          + "nInfo\022\027\n\017principal_email\030\001 \001(\t\022\031\n\021princi"
+          + "pal_subject\030\002 \001(\t\"\"\n\013Geolocation\022\023\n\013regi"
+          + "on_code\030\001 \001(\tB\347\001\n\"com.google.cloud.secur"
+          + "itycenter.v1B\013AccessProtoP\001ZLgoogle.gola"
+          + "ng.org/genproto/googleapis/cloud/securit"
+          + "ycenter/v1;securitycenter\252\002\036Google.Cloud"
+          + ".SecurityCenter.V1\312\002\036Google\\Cloud\\Securi"
+          + "tyCenter\\V1\352\002!Google::Cloud::SecurityCen"
+          + "ter::V1b\006proto3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
@@ -87,6 +88,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "PrincipalSubject",
               "ServiceAccountKeyName",
               "ServiceAccountDelegationInfo",
+              "UserName",
             });
     internal_static_google_cloud_securitycenter_v1_ServiceAccountDelegationInfo_descriptor =
         getDescriptor().getMessageTypes().get(1);
diff --git a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/proto/google/cloud/securitycenter/v1/access.proto b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/proto/google/cloud/securitycenter/v1/access.proto
index 799b84fcccb8..159a6ef6f888 100644
--- a/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/proto/google/cloud/securitycenter/v1/access.proto
+++ b/java-securitycenter/proto-google-cloud-securitycenter-v1/src/main/proto/google/cloud/securitycenter/v1/access.proto
@@ -42,7 +42,7 @@ message Access {
   // The caller IP's geolocation, which identifies where the call came from.
   Geolocation caller_ip_geo = 3;
 
-  // What kind of user agent is associated, e.g. operating system shells,
+  // What kind of user agent is associated, for example operating system shells,
   // embedded or stand-alone applications, etc.
   string user_agent_family = 4;
 
@@ -76,6 +76,15 @@ message Access {
   // authorities are present, they are guaranteed to be sorted based on the
   // original ordering of the identity delegation events.
   repeated ServiceAccountDelegationInfo service_account_delegation_info = 9;
+
+  // A string that represents the username of a user, user account, or other
+  // entity involved in the access event. What the entity is and what its role
+  // in the access event is depends on the finding that this field appears in.
+  // The entity is likely not an IAM principal, but could be a user that is
+  // logged into an operating system, if the finding is VM-related, or a user
+  // that is logged into some type of application that is involved in the
+  // access event.
+  string user_name = 11;
 }
 
 // Identity delegation history of an authenticated service account.
@@ -97,4 +106,4 @@ message ServiceAccountDelegationInfo {
 message Geolocation {
   // A CLDR.
   string region_code = 1;
-}
+}
\ No newline at end of file
diff --git a/versions.txt b/versions.txt
index a7c8d4a2bf0f..26acef5dc131 100644
--- a/versions.txt
+++ b/versions.txt
@@ -599,4 +599,4 @@ google-cloud-monitoring-metricsscope:0.1.0:0.1.0
 proto-google-cloud-monitoring-metricsscope-v1:0.1.0:0.1.0
 grpc-google-cloud-monitoring-metricsscope-v1:0.1.0:0.1.0
 proto-google-cloud-tpu-v2:2.8.0:2.8.0
-grpc-google-cloud-tpu-v2:2.8.0:2.8.0
\ No newline at end of file
+grpc-google-cloud-tpu-v2:2.8.0:2.8.0