> For the complete documentation index, see [llms.txt](https://developer.collibra.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.collibra.com/workflows/designing-workflows/processes/process-execution/restricting-groovy-script-io-access.md).

# Restricting Groovy script I/O access

You can request Collibra Support to restrict specific Java I/O and network methods in Groovy workflow scripts. Once applied, any script that calls a restricted method fails with an error. The restriction prevents workflows from accessing the local file system, making outbound network calls, or reading system environment variables, which reduces the risk of data exfiltration or unintended side effects.

## What can be restricted

The following Java classes and methods can be blocked on request:

* `java.nio.file.Files`
* `java.io.File`
* `java.net.URL`
* `java.net.HttpURLConnection`
* `java.net.Socket`
* `System.getenv()`
* `System.getProperties()`

## Impact on existing workflows

Before requesting the restriction, audit all Groovy script tasks in your workflows. Any script that calls a restricted method stops working after the restriction is applied.

## How to request

Contact [Collibra Support](https://support.collibra.com) to enable this restriction for your environment.