---
sourceDocument: Yokohama Platform security
sourceDocumentLink: https://www.servicenow.com/docs/r/yokohama/platform-security

 Release :

    - yokohama

ft:locale :

    - en-US

ft:publication_title :

    - Yokohama Platform security

ft:clusterId :

    - psec

bundleId :

    - psec

workflow :

    - Platform


---

# Disallow target cloning \[New in Security Center 1.3\]

# Disallow target cloning \[New in Security Center 1.3\] {#ariaid-title1}

* Release version: Yokohama
* 
* Updated June 9, 2025
* 
* ![](https://www.servicenow.com/docs/portal-asset/ico-clock) 1 minute to read

Configure the glide.db.clone.allow_clone_target property to prevent your instance from being used as a clone target.
Protect your instance from being used as a clone target by setting the glide.db.clone.allow_clone_target system property to false. A system clone copies everything in a database from a
source instance to the target instance. This is a security risk because the instance database on the target instance is overwritten in the cloning process, leading to data loss and lack of data integrity.

Set the glide.db.clone.allow_clone_target system property to false on production instances to disallow your instance from being selected as a clone target.

## More information {#sc-disallow-target-cloning__section_qhx_1b1_xwb}

{#sc-disallow-target-cloning__table_ajc_b43_3kb__entry__2}

| Attribute | Description |
|-|-|
| Configuration name | glide.db.clone.allow_clone_target |
| Configuration type | System Properties (/sys_properties_list.do) |
| Data type | boolean |
| Recommended value | false |
| Default value | true |
| Category | [Configuration](https://www.servicenow.com/docs/WFJwn~TetH3UCR288RF5Yw "The Configuration category ensures applications have a secure build environment and hardened third party library components. Specifically, ensuring a build and deploy pipeline is repeatable and includes automated testing and prevents known security issues from being deployed. This includes keeping dependencies up to date and free from known vulnerabilities.") |
| Security risk | * Severity score: 4.4 * CVSS score: Medium * Security risk details: Not setting this property to the recommended value of false enables the instance to be used as a clone target. This is a security risk because the instance database can be overwritten in the cloning process. {#sc-disallow-target-cloning__ul_g1g_3sf_xwb} |
| Dependencies and prerequisites | None |
| References | * * [Register target instance (legacy)](https://www.servicenow.com/docs/access?context=t_CreateACloneTarget&version=yokohama&pubname=yokohama-platform-administration&ft:locale=en-US) {#sc-disallow-target-cloning__ul_bc3_kdf_2yb} |
| Functional impact | This property provides an additional safeguard which prevents a production instance from being cloned to. The default value is false for production instances and true for sub production instances such as dev or qa. To enable an instance to be used as a clone target set this property to true. |
[ ]

{#sc-disallow-target-cloning__table_ajc_b43_3kb}