# Uploads, Paste to Desktop Apps

Intercepts data movement - file transfers, uploads, and paste events - within desktop applications. Nightfall monitors at the application layer, capturing events before they reach the network.

**Supported applications**

<table><thead><tr><th width="161.203125">Category</th><th>Applications</th></tr></thead><tbody><tr><td>Messaging</td><td>Slack, WhatsApp, iMessage, Signal, Telegram, Discord, Microsoft Teams</td></tr><tr><td>Email</td><td>Outlook, Apple Mail</td></tr><tr><td>AI assistants</td><td>ChatGPT, Claude, Microsoft Copilot</td></tr></tbody></table>

{% hint style="info" %}
**macOS + Windows (both):** Slack, WhatsApp, Signal, Telegram, Discord, Outlook, Microsoft Teams, ChatGPT, Claude, Microsoft Copilot

**macOS only:** iMessage, Apple Mail
{% endhint %}

**Scope options**

* All supported applications.
* Specific applications selected from the list above.

**Event types monitored**

* File attachments and transfers
* Uploads within app interfaces
* Paste events into app input fields

Domain collections are not used for this trigger. There is no session detection for desktop app events - monitoring applies to all account types within the monitored application.


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://help.nightfall.ai/data-exfiltration-prevention/exfiltration_endpoint/policies/trigger/uploads-paste-to-desktop-apps.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.