Is Silk - Privacy Pass Client safe?

Clean risk

Provides Privacy Pass tokens for websites that support the Privacy Pass protocol.

This extension gets cryptographic Privacy Pass tokens for supported websites, such as Cloudflare-protected sites, to improve your human signal. When a site requests a token, it opens a challenge page for you to solve and then obtains one token after successful completion.

Cloudflare Researchv4.0.2Chrome Web Store
0Risk
Who publishes it

Cloudflare Research - no other listings under this identity

What this publisher told the store about itself, and the other listings that told it the same thing.

Publisher
Cloudflare Research

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

What it can do

Permissions this extension asks for, as declared in version 4.0.2. Asking for a permission is not a finding on its own - it is what the extension can do if it chooses to.

  • Read and change your data on every site you visit

    <all_urls>

  • Block and redirect the requests your browser makes

    declarativeNetRequest

  • Store data in your browser

    storage

  • See the address and title of every tab you have open

    tabs

  • Watch every request your browser makes

    webRequest

Where it sends data

Destinations our analysis observed Silk 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.

  • Cloudflare Research

    Silk sends data to Cloudflare Research. Named as a recipient in this extension's own analysis.

Updated 30 September 2026ajhmfdgkijocedmfjonnpjfojldioehi