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Privacy oriented, anti-phishing add-on for Tor Browser that protects you from bad .onion sites.

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OnionTree Sentinel

Mozilla Add-on Mozilla Add-on Mozilla Add-on Mozilla Add-on

A privacy oriented, anti-phishing add-on for Tor Browser that protects you from bad .onion sites.

NOTICE

This is an experimental software. The add-on is fully functional but somewhat rough around the edges. Feedback and code contributions are welcomed.

Features

  • Protects against phishing onion sites by utilizing a whitelist of verified links.

  • Provides alternative mirrors, if current one does not work.

  • Warns when accessing an onion site using a Tor2Web proxy.

How it works?

The add-on imports databases of well-known, verified addresses. By default, the add-on imports OnionTree. Every time you visit a website, website's URL is looked up in a database. URL lookups are done on your machine only. OnionTree Sentinel never sends out addresses that you visit.

If URL is found in a database, the canary icon turns green and a pop up becomes available which displays the name of the site and alternative mirrors.

Image

If URL is not found in a database, the canary icon turns red and a pop up becomes available, warning a user to be aware that this site may be a phishing site. Optionally a user can report the URL as a phishing site. At the moment, this works by opening a new issue in OnionTree GitHub repository.

Image

Installation

The add-on is available via Mozilla's Addons.

Hacking

In order to test the add-on locally.

$ git clone https://github.com/onionltd/oniontree-sentinel

Open Tor Browser and navigate to about:debugging. Click Load Temporary Add-on... and load the add-on's manifest in src/manifest.json.

Future works

  • Improve UI

  • Make the add-on persistent on Tails

Why "sentinel"?

See sentinel species. Icons are an edited version of canary made by Freepik from www.flaticon.com.

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Privacy oriented, anti-phishing add-on for Tor Browser that protects you from bad .onion sites.

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