> For the complete documentation index, see [llms.txt](https://help.nightfall.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.nightfall.ai/slack/slack-faqs/types_of_channels_scanned.md).

# What types of channels does Nightfall scan? Does Nightfall scan shared channels?

### **What type of channels does Nightfall scan?** <a href="#what-type-of-channels-does-nightfall-scan" id="what-type-of-channels-does-nightfall-scan"></a>

Coverage depends on your Slack plan.

**Nightfall Pro and Business+ for Slack** scans public channels and selectively scans private channels:

* **Public channels:** Nightfall can scan all public channels in your workspace. By default, the bot is only in the channels that you invite it into. Nightfall can invite the bot to all public channels, including any new ones, upon request. Email <support@nightfall.ai> to enable auto-joining for all public channels on Nightfall Pro.
* **Private channels:** Nightfall scans a private channel only when the bot is invited to it. In the private channel, run `/invite @Nightfall Pro #[channel]`.
* **Direct messages:** Direct messages (1:1 and group DMs) are **not** supported on Pro and Business+. Slack does not permit bot applications in direct messages.

**Nightfall Enterprise for Slack** (Slack Enterprise Grid) scans all public channels, all private channels, and all direct messages (1:1 and group DMs) across your organization. It uses the Slack Discovery API, so you do not need to invite a bot to any channel.

### **Does Nightfall scan shared channels?** <a href="#does-nightfall-scan-shared-channels" id="does-nightfall-scan-shared-channels"></a>

Yes. Nightfall scans for sensitive information in Slack channels shared with other workspaces, also known as shared channels (Slack Connect).

* **Nightfall Pro and Business+:** Nightfall scans public and private Slack Connect channels in which the bot has been invited. Direct messages are not supported.
* **Nightfall Enterprise:** Nightfall can scan all shared channels. You can choose which ones to scan in the policy configuration.

Customers will receive alerts and can set up automated actions for sensitive information shared by all parties in shared Slack channels. However, Nightfall is unable to delete content posted by members of workspaces that are not covered by Nightfall, because this content is "owned" by the organization you are sharing the channel with.


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