Is Nightfall DLP for Browsers safe?
Nightfall DLP monitors clipboard, file uploads, and email content across every site to enforce an organization's DLP policies.
This is an enterprise data-loss-prevention tool that, by design, watches what users copy, paste, and upload on all websites and relays those events to a Nightfall agent running on the local machine over a localhost WebSocket. It reads Gmail message bodies and attachments through the user's Google OAuth token and sends them to Nightfall's encryption API (extension.nightfall.ai) for its encrypted-email feature, and on AI sites like ChatGPT, Claude, and Perplexity it reads the signed-in account email to attribute events to a user. These monitoring behaviors are the product's purpose, deployed by an organization rather than chosen by an individual user.
Who publishes itNightfall AI - no other listings under this identity, 5 shared hostnames
Nightfall AI - no other listings under this identity, 5 shared hostnames
What this publisher told the store about itself, and the other listings that told it the same thing.
Shared hosts - 5 hostnames
Hostnames hardcoded in this extension that few other listings call. That can mean one operator behind both, and it can equally mean a small shared vendor, so it is context rather than a conclusion. Hosts that many listings call are left out: they are services, not connections.
AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.
Publishers can request a review.
Where it sends data
Destinations our analysis observed Nightfall DLP for Browsers contacting. Sending data somewhere is not a finding on its own - an extension that syncs your settings has to talk to its own server - but it is where your data can go, and who else it goes to.
- gmail.googleapis.com
Nightfall DLP for Browsers sends data to gmail.googleapis.com. 2 other extensions we have analyzed send data here.
- extension.nightfall.ai
Nightfall DLP for Browsers sends data to extension.nightfall.ai. No other extension we have analyzed sends data here.
- Nightfall local agent (localhost WebSocket)
Nightfall DLP for Browsers sends data to Nightfall local agent (localhost WebSocket). Named as a recipient in this extension's own analysis.