diff --git a/debian/control b/debian/control
index 56f79c01c..9e303b9d2 100644
--- a/debian/control
+++ b/debian/control
@@ -43,6 +43,7 @@ Description: Deepin cooperation backend
 Package: deepin-data-transfer
 Architecture: any
 Depends: ${shlibs:Depends}, ${misc:Depends}, dde-cooperation-daemon
+Recommends: deepin-security-loader
 Description: deepin data transfer frontend
  Deepin Desktop Environment (DDE) - data transfer frontend.
 
diff --git a/debian/deepin-data-transfer.install b/debian/deepin-data-transfer.install
index 1f7bb88de..462d99825 100644
--- a/debian/deepin-data-transfer.install
+++ b/debian/deepin-data-transfer.install
@@ -1,4 +1,5 @@
 usr/bin/deepin-data-transfer
+usr/libexec/deepin/deepin-data-transfer
 usr/lib/*/dde-cooperation/plugins/data-transfer/*.so*
 usr/share/deepin-data-transfer/translations/*.qm
 usr/share/icons/hicolor/scalable/apps/deepin-data-transfer.svg
diff --git a/src/apps/data-transfer/CMakeLists.txt b/src/apps/data-transfer/CMakeLists.txt
index 3730bb9bf..9d56bcda0 100644
--- a/src/apps/data-transfer/CMakeLists.txt
+++ b/src/apps/data-transfer/CMakeLists.txt
@@ -21,7 +21,7 @@ endif()
 if (WIN32)
     set(qt_required_components Core Gui Network Widgets Sql WinExtras)
 else()
-    set(qt_required_components Core Gui Network Widgets)
+    set(qt_required_components Core Gui Network Widgets DBus)
 endif()
 find_package(QT NAMES Qt6 Qt5 REQUIRED COMPONENTS ${qt_required_components})
 find_package(Qt${QT_VERSION_MAJOR} REQUIRED COMPONENTS ${qt_required_components})
@@ -76,11 +76,19 @@ target_link_libraries(${PROJ_NAME}
 if (CMAKE_SYSTEM MATCHES "Linux")
     target_link_libraries(${PROJ_NAME}
           PRIVATE
+        Qt${QT_VERSION_MAJOR}::DBus
         ${DtkWidget_LIBRARIES}
     )
 endif()
 
-install(TARGETS ${PROJ_NAME} DESTINATION bin)
+if (WIN32)
+    install(TARGETS ${PROJ_NAME} DESTINATION bin)
+else()
+    # 真实二进制安装到 libexec，/usr/bin 由启动脚本占用（见下），
+    # 以便经 deepin-security-loader 附加 deepin-daemon 组启动
+    install(TARGETS ${PROJ_NAME} DESTINATION libexec/deepin)
+    install(PROGRAMS res/linux/deepin-data-transfer.sh DESTINATION bin RENAME deepin-data-transfer)
+endif()
 
 # translation files
 TRANSLATION_GENERATE(QM_FILES ${CMAKE_SOURCE_DIR}/translations/${PROJ_NAME})
diff --git a/src/apps/data-transfer/main.cpp b/src/apps/data-transfer/main.cpp
index 4d598a7fd..e7aa4a375 100644
--- a/src/apps/data-transfer/main.cpp
+++ b/src/apps/data-transfer/main.cpp
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: 2023 UnionTech Software Technology Co., Ltd.
+// SPDX-FileCopyrightText: 2023-2026 UnionTech Software Technology Co., Ltd.
 //
 // SPDX-License-Identifier: GPL-3.0-or-later
 
@@ -10,7 +10,15 @@
 
 #include <QDir>
 #include <QIcon>
+#include <QThread>
 #include <QTranslator>
+#include <QDBusConnection>
+#include <QFile>
+#include <QJsonArray>
+#include <QJsonDocument>
+#include <QJsonObject>
+
+#include <fcntl.h>
 
 static constexpr char kPluginInterface[] { "org.deepin.plugin.datatransfer" };
 static constexpr char kPluginCore[] { "data-transfer-core" };
@@ -20,6 +28,91 @@ static constexpr char kPluginCore[] { "data-transfer-core" };
 #define LIB_FILE_NAME(lib_name) QString("lib%1.so").arg(#lib_name)
 #endif
 
+#ifdef linux
+// deepin-security-loader 启动协议（与 deepin-home-appstore-client 行为一致）：
+// 进程经 loader 附加 deepin-daemon 组启动时，loader 会附加 --fd1/--fd2 命令行参数，
+// 分别传入一对管道：子进程把自身 system bus 唯一连接名和需要免鉴权的服务列表
+// 以 JSON 写入 fd1，loader 收到后以组身份代为调用各服务的 SetAllowCaller 白名单
+// 注册，之后 InstallPackage 等接口免 polkit 鉴权。
+// 子进程若不回报，loader 会超时退出并结束子进程（表现为启动闪退），
+// 因此经 loader 启动时必须尽早完成回报；直接启动（无 --fd1）则跳过。
+static void initSecurityLoaderReport()
+{
+    const QStringList args = QCoreApplication::arguments();
+    int fd1 = -1, fd2 = -1;
+    for (int i = 1; i + 1 < args.count(); ++i) {
+        if (args.at(i) != QLatin1String("--fd1") && args.at(i) != QLatin1String("--fd2"))
+            continue;
+        // toInt() 解析失败会返回 0（即 stdin），必须校验，避免误把标准输入当作管道 fd
+        bool ok = false;
+        const int fd = args.at(i + 1).toInt(&ok);
+        if (!ok)
+            continue;
+        if (args.at(i) == QLatin1String("--fd1"))
+            fd1 = fd;
+        else
+            fd2 = fd;
+    }
+    if (fd1 < 0)
+        return;   // 未经 security-loader 启动，无需回报
+
+    // 管道 fd 保持打开（loader 侧不依赖 EOF 读取，与参照实现 appstore-client 一致），
+    // 但设置 FD_CLOEXEC，避免回报管道泄漏给后续 QProcess 派生的子进程
+    if (fcntl(fd1, F_SETFD, FD_CLOEXEC) < 0)
+        qWarning() << "failed to set FD_CLOEXEC on fd" << fd1;
+    if (fd2 >= 0 && fcntl(fd2, F_SETFD, FD_CLOEXEC) < 0)
+        qWarning() << "failed to set FD_CLOEXEC on fd" << fd2;
+
+    const QString uniqueName = QDBusConnection::systemBus().baseService();
+    if (uniqueName.isEmpty()) {
+        qWarning() << "system bus not connected, skip allow-caller report";
+        return;
+    }
+
+    QJsonObject dest;
+    dest.insert(QStringLiteral("DbusName"), QStringLiteral("com.deepin.lastore"));
+    dest.insert(QStringLiteral("DbusPath"), QStringLiteral("/com/deepin/lastore"));
+    dest.insert(QStringLiteral("DbusInterface"), QStringLiteral("com.deepin.lastore.Manager"));
+    QJsonObject msg;
+    msg.insert(QStringLiteral("UniqueName"), uniqueName);
+    msg.insert(QStringLiteral("DestList"), QJsonArray { dest });
+
+    QFile reportPipe;
+    if (!reportPipe.open(fd1, QIODevice::WriteOnly, QFileDevice::DontCloseHandle)) {
+        qWarning() << "failed to open security-loader report pipe:" << fd1;
+        return;
+    }
+    reportPipe.write(QJsonDocument(msg).toJson(QJsonDocument::Compact));
+    reportPipe.flush();
+    reportPipe.close();
+    qInfo() << "allow-caller report sent:" << uniqueName;
+
+    // fd2 可读回 {"Result":...,"ErrorMsg":...}。管道为非阻塞模式，loader 处理需要
+    // 一次 dbus 往返，轮询等待一小段时间用于日志，失败不影响主流程；
+    // 最多等 500ms——该调用位于单例检查之前，不应拖慢启动与窗口激活
+    if (fd2 >= 0) {
+        QFile resultPipe;
+        if (resultPipe.open(fd2, QIODevice::ReadOnly, QFileDevice::DontCloseHandle)) {
+            QByteArray resultData;
+            for (int i = 0; i < 10 && resultData.isEmpty(); ++i) {
+                resultData = resultPipe.readAll();
+                if (resultData.isEmpty())
+                    QThread::msleep(50);
+            }
+            resultPipe.close();
+            if (resultData.isEmpty()) {
+                qWarning() << "no allow-caller result from security-loader within 500ms";
+            } else {
+                const QJsonObject result = QJsonDocument::fromJson(resultData).object();
+                qInfo() << "allow-caller register result:"
+                        << result.value(QLatin1String("Result")).toBool()
+                        << result.value(QLatin1String("ErrorMsg")).toString();
+            }
+        }
+    }
+}
+#endif
+
 static bool loadPlugins()
 {
     QStringList pluginsDirs;
@@ -92,6 +185,13 @@ int main(int argc, char *argv[])
 #endif
 
 
+#ifdef linux
+    // 必须先于任何可能退出的分支（含单例失败）：经 security-loader 启动时若不回报
+    // 连接名，loader 会超时并结束子进程，表现为启动闪退；该回报同时完成 lastore
+    // 免鉴权白名单注册，需早于插件里 SettingHelper 的第一次 InstallPackage
+    initSecurityLoaderReport();
+#endif
+
     bool canSetSingle = app.setSingleInstance(app.applicationName());
     if (!canSetSingle) {
         qInfo() << "single application is already running.";
diff --git a/src/apps/data-transfer/res/linux/deepin-data-transfer.sh b/src/apps/data-transfer/res/linux/deepin-data-transfer.sh
new file mode 100755
index 000000000..d10a9f0c8
--- /dev/null
+++ b/src/apps/data-transfer/res/linux/deepin-data-transfer.sh
@@ -0,0 +1,27 @@
+#!/bin/bash
+# SPDX-FileCopyrightText: 2026 UnionTech Software Technology Co., Ltd.
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+# Deepin Data Transfer launcher
+# 参照 deepin-home-appstore-client：满足条件时经 deepin-security-loader
+# 附加 deepin-daemon 组启动，使 lastore 免鉴权接口调用可行；
+# 否则直接启动，鉴权回退为系统 polkit 弹窗（等同历史行为）。
+
+REAL_BIN=/usr/libexec/deepin/deepin-data-transfer
+
+# Check if /usr/bin/deepin-security-loader is executable and dbus version meets
+# requirement（用 -x 而非 -f：exec 失败时 bash 会直接退出 127，无法走 || 回退，
+# 须在 exec 前排除不可执行的 loader）
+if [ -x "/usr/bin/deepin-security-loader" ]; then
+    # Check dbus version
+    if DBUS_VERSION=$(dpkg-query -W -f='${Version}' dbus 2>/dev/null); then
+        # Compare dbus version with 1.12.20.17-deepin1
+        if dpkg --compare-versions "$DBUS_VERSION" ge "1.12.20.17-deepin1"; then
+            # Use security loader with deepin-daemon group
+            exec /usr/bin/deepin-security-loader --group deepin-daemon -- "$REAL_BIN" "$@"
+        fi
+    fi
+fi
+
+# Fallback to direct launch
+exec "$REAL_BIN" "$@"