为您的Windows^(Windows)计算机增加一层安全性的一种方法是启用安全登录^{(secure logon)}。通过启用安全登录，用户必须先按Ctrl+Alt+Del，然后才能输入其凭据并登录。

Ctrl+Alt+Del或Windows 11/10安全^(Secure)登录

安全登录提供了任何应用程序都无法截获的击键序列。启用安全登录^{(Secure Logon)}后，任何其他恶意程序都无法在您输入用户名和密码时截获您的用户名和密码。

按Ctrl+Alt+Del可确保显示真实的Windows登录屏幕。要启用安全登录，请打开Run，键入Control Userpasswords2或netplwiz 并按Enter以打开User Accounts Properties框。

打开“高级^(Advanced)”选项卡，在“安全^(Secure)登录”部分中，单击以清除“Require users to press Ctrl+Alt+Delete ”复选框，以禁用CTRL+ALT+DELETE序列。 Click Apply/OK > Exit。

现在下次登录时，您将看到您的Windows 8锁定屏幕，并在左上角显示以下内容。

按Ctrl+Alt+Del将允许您输入Windows登录密码。

阅读^(Read)：如何在 Windows中显示有关以前登录的信息。

使用组策略^{(Group Policy)}禁用CTRL+ALT+DELETE

如果您愿意，您还可以使用本地安全策略强制执行此策略^{(Local Security Policy)}。为此，请运行secpol.msc并按 Enter。

在左侧窗格中，选择Local Policies > Security 选项^(Options)。现在在右窗格中，双击Interactive logon: Do not require CTRL+ALT+DEL。

This security setting determines whether pressing CTRL+ALT+DEL is required before a user can log on. If this policy is enabled on a computer, a user is not required to press CTRL+ALT+DEL to log on. Not having to press CTRL+ALT+DEL leaves users susceptible to attacks that attempt to intercept the users’ passwords. Requiring CTRL+ALT+DEL before users log on ensures that users are communicating by means of a trusted path when entering their passwords. If this policy is disabled, any user is required to press CTRL+ALT+DEL before logging on to Windows.

根据您的要求启用或禁用策略，单击Apply/OK and Exit。

默认情况下，该策略在Windows 11/10/8域计算机上启用，并在Windows 7或更早版本上禁用。默认情况下，该策略在独立计算机上启用。

使用注册表禁用安全登录

打开注册表编辑器^{(Registry Editor)}并导航到以下键：

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon

在右侧窗格中，右键单击DisableCAD，然后单击修改。

• 要禁用安全登录，请键入 1。
• 要启用安全登录，请键入 0。

您还可以使用组策略或注册表change the Ctrl+Alt+Del Screen options

我希望这篇文章有所帮助。

Enable, Disable CTRL+ALT+DEL Secure Logon Ctrl Alt Del in Windows

One way of adding one more layer of secυrity to your Wіndоws computer is by enabling secure logon. By enabling secure logon, users are required to press Ctrl+Alt+Del before they can enter their credentials and log on.

Ctrl+Alt+Del or Secure logon in Windows 11/10

Secure logon offers a  keystroke sequence that cannot be intercepted by any application. When Secure Logon is enabled, no other malicious program can intercept your user name and password as you enter it.

Pressing Ctrl+Alt+Del ensures that the authentic Windows logon screen appears. To enable secure logon, open Run, type Control Userpasswords2 or netplwiz and hit Enter to open the User Accounts Properties box.

Open the Advanced tab, and in the Secure logon section, click to clear the Require users to press Ctrl+Alt+Delete check box if you want to disable the CTRL+ALT+DELETE sequence. Click Apply/OK > Exit.

Now the next time to logon you will see your Windows 8 lock screen with the following display in the top-left corner.

Pressing Ctrl+Alt+Del will allow you to enter your Windows logon password.

Read: How to display information about previous logons in Windows.

Disable CTRL+ALT+DELETE using Group Policy

If you wish, you can also enforce this policy, using the Local Security Policy.  To do so, Run secpol.msc and hit Enter.

In the left pane, select Local Policies > Security Options. Now in the right pane, double click on Interactive logon: Do not require CTRL+ALT+DEL.

This security setting determines whether pressing CTRL+ALT+DEL is required before a user can log on. If this policy is enabled on a computer, a user is not required to press CTRL+ALT+DEL to log on. Not having to press CTRL+ALT+DEL leaves users susceptible to attacks that attempt to intercept the users’ passwords. Requiring CTRL+ALT+DEL before users log on ensures that users are communicating by means of a trusted path when entering their passwords. If this policy is disabled, any user is required to press CTRL+ALT+DEL before logging on to Windows.

Enable or Disable the policy as per your requirement, click Apply/OK and Exit.

By default, the policy is enabled on Windows 11/10/8 domain-computers, and disabled on Windows 7 or earlier. The policy is enabled by default on stand-alone computers.

Disable Secure Logon using Registry

Open Registry Editor and navigate to the following key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon

In the right pane, right-click on DisableCAD and click on Modify.

• To Disable Secure Logon, type 1.
• To Enable Secure Logon, type 0.

You can also change the Ctrl+Alt+Del Screen options using Group Policy or Registry.

I hope this post helped.

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