> For the complete documentation index, see [llms.txt](https://docs.docontrol.io/docontrol-user-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.docontrol.io/docontrol-user-guide/workflows/define-workflow-settings/action-settings/remediate/slack-remediation.md).
# Slack remediation
Slack is a cloud-based communication tool that promotes collaboration via dedicated channels, automatic reminders, and notifications.
After integrating with Slack, DoControl receives real-time events (webhooks) and captures data about users and assets in public channels only.
As a result, your organization can leverage this information to make smarter decisions and reduce security risk in the following ways:
* Trigger alerts when encryption keys are shared in public channels.
* Set up security workflows to handle personally identifiable information (PII) sharing in public channels.
* If necessary, delete files that contain PII or sensitive information directly from Slack.
* Monitor and remediate Slack canvases that were shared in a public channel.
{% hint style="info" %}
* In the current version, data is not collected from private Slack channels, direct messages, or group messages.
* DoControl fully supports Slack canvases: documents that you create and share in your Slack workspace. Canvases are listed under **Slack inventory > Files**.
{% endhint %}
## Delete file
You can implement a remediation action in automated workflows to delete specific Slack files that pose a security or data exposure risk to your organization.
{% hint style="warning" %}
DoControl deletes Slack files in near-real time.
{% endhint %}
#### To delete a Slack file:
1. In your workflow, define a trigger related to Slack.
2. Add a relevant Slack event; for example, a file that was shared.
3. Add any relevant conditions, such as if the file contains an encryption key from the default lexical list.
4. Add any relevant **Notify** action to send a message to the relevant team.
5. From the Actions pane, select **Remediate > Slack > Delete file**.
6. Use the automatically-populated `Asset ID` field or add a macro.
Defining a workflow with a remediation action to automatically delete a Slack file containing an encryption key
{% hint style="info" %}
After you delete a Slack file, it's permanently deleted and cannot be recovered.
{% endhint %}
---
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