Extension privacy and permissions

Updated June 2026

You'll learn how to: Understand what the Nynch extension can see on LinkedIn, what it does with that data, and how your sign-in works.

Time: 3 min.

Prereqs: Install the Nynch Chrome extension.

What the extension can access

The Nynch extension runs only on LinkedIn pages. On those pages it can read what you can already see, including:

Profile information you're viewing: name, headline, location, company, experience, education, skills, mutual connections, and connection degree (1st, 2nd, 3rd).
A LinkedIn conversation, but only when you explicitly click Import Messages in that thread.
Your Nynch sign-in, so it knows it's you (see "How your sign-in works" below).

It does not access:

Your LinkedIn password.
Other people's private messages (only a thread you choose to import).
Pages or websites outside LinkedIn, or your wider browser history.

What happens to the data you capture

When you save a person or import messages, the extension sends that data to your Nynch workspace over an encrypted (HTTPS) connection.
It's stored against your workspace, alongside the rest of your Nynch data.
Like the rest of Nynch, captured data may be processed by Nynch's service providers (for example, for transcription, enrichment, or AI features). How Nynch handles and shares data is governed by Nynch's privacy policy.

You can remove captured people the same way you remove any contact in Nynch (open the person and delete them, or delete in bulk from the People table).

How your sign-in works

You sign in to app.nynch.com in your browser.
The extension picks up your Nynch login automatically from the app and stores it locally in the browser so you don't have to sign in again separately.
Your password is never stored in the extension.
When you sign out of the Nynch app, that login eventually expires and the extension stops working until you sign in again.

Chrome permissions

When you install it, the extension asks for the Chrome permissions it needs to work on LinkedIn (to inject the Nynch sidebar, read LinkedIn page content, and store your Nynch login locally). It does not ask for access to your camera, microphone, files, or other websites.

Turn the extension off or remove it

Open chrome://extensions/ in Chrome (or click the puzzle-piece icon, then Manage extensions).
Find Nynch.
Use the toggle on its card to turn it off (and on again later), or click Remove to uninstall it.

Removing the extension ends its access to your LinkedIn pages and your stored Nynch login.

Questions about privacy

For questions about how Nynch handles your data, or to report a concern, contact Nynch support through the in-app support + resources link.