Manually Install the Nightfall Safari Extension

Prerequisites

• Mac with the Nightfall endpoint agent already installed

• Permission to install apps from the Mac App Store

Steps

1. Install from the Mac App Store. Open this link (the app is not searchable by name in the App Store):

https://apps.apple.com/us/app/nightfall-dlp-for-browsers/id6751912217

Click through to the Mac App Store and install Nightfall DLP for Browsers.

2. Open Safari extension settings

• Open Safari

• Menu bar: Safari > Safari Extensions...

• Or: Safari > Settings > Extensions

3. Enable the extension

• Select Nightfall DLP for Browsers in the sidebar

• Check the box to enable it

• Approve any macOS authorization prompt

4. Set permissions

• Turn on Allow in Private Browsing

• Click Always Allow on Every Website...

• In the confirmation dialog, click Always Allow on Every Website

Verify

• Extension is enabled under Safari > Settings > Extensions

• Private browsing and “every website” permissions are granted

• Device shows online in the Nightfall console under Endpoint