This message may bother you a lot.
Here this post fromMiniToolwill help you fix Windows Defender showing Behavior:Win32/Hive.ZY.
In this case, you may notice that the Behavior:Win32/Hive.ZY message will keep appearing and never stop.

Behavior:Win32/Hive.ZY is a generic method for detecting suspicious behavior, designed to catch potentially malicious files.
Users who received this message will wonder how can I stop Win32/Hive.ZY.
Here is a guide.
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Check the guide for Microsoft/Windows Defender download, install, uninstall, reinstall on Windows 10/11.
Also learn how to fix cant open Windows Defender.
Here is how you’ve got the option to check for it.

Step 1: Press theWin + Ikeys to open theSettingsapp.
Step 2: Click onUpdate & Security>Windows Security.
Step 3: UnderProtection areas, chooseVirus & threat protection.
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Step 4: Scroll down the list until you findvirus & threat protection updates.
This post teaches you how to fix the Security Intelligence Update not downloading issue.
you’ve got the option to try them one by one until fixing the issue.

Fix 2: Turn Off Windows Security Notifications
You canhide all notifications from Windows Security.
Here are the steps.
Step 1: Right-punch theStartbutton and chooseSettingsto open it.
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Step 3: In the right pane, choose theOpen Windows Securitybutton.
Step 4: In the left pane, select theThree-lineicon to fire up the menu and chooseSettings.
Step 5: UnderNotifications, click onManage notifications.
Step 6: Turn off the following three options.
Fix 3: set up the Latest Windows System
An outdated Windows system may cause the problem.
You need them to protect your system from vulnerabilities and keep it running smoothly.
Work with the following steps to modernize your Windows.
Step 1: Open theSettingsapp.
In controls, click onUpdate & Security>Windows Update.
Step 3: When there is an available update, click onDownload & installto start the process.
Step 4: Once the downloading and installing process is over, you will see theRestart nowbutton.
tap on the button to complete the whole process.
Here is how you’re able to enable it.
Click onUpdate & Security>Windows Update.
UnderChoose how updates are installed, selectAutomatic (recommended).
This way, your system will download and install updates automatically.
Hope they can work for you.