Osprey: Browser Protection

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Osprey: Browser Protection

License: GPL v3 CodeQL Chrome Stats Edge Stats

Osprey is a browser extension that protects you from malicious websites.

Chrome Web Store • Microsoft Edge Addons • Privacy Policy

Osprey Banner

Protections

By default, when you visit a website, Osprey checks the URL with:

Settings

You can configure the extension’s protection options in the settings:

Osprey Settings

Detections

Osprey blocks websites that are classified as:

Warning

If the website is malicious, Osprey will block the page and display a warning:

Osprey Warning

Privacy

Osprey strips down each URL of tracking parameters before sending it to any APIs.

For example:

  1. If you search for shirts on Amazon and visit: https://www.amazon.com/s?k=shirts&crid=3TOVSW14ZHF8V&sprefix=shirt%2Caps%2C175&ref=nb_sb_noss_1
  2. Osprey will only send https://amazon.com/s to any APIs you have enabled.
  3. If the APIs report that the page is safe to visit, Osprey caches the result for 24 hours.
  4. It will also be cached if you click ‘Continue anyway’ or ‘Add hostname to allowlist’ on a blocked site.
  5. As long as a URL is cached, no new network requests will be made for it.

The only data the APIs receive is the stripped-down URL, your user agent, and your IP address.

Use a reputable VPN or proxy service if you’re concerned about IP-related privacy.

Installation

You can install Osprey from the web stores listed at the top.

For other installations, you can install the extension manually:

Chrome or Edge

  1. Navigate to the Actions section and click Compile for Chrome or Compile for Edge.
  2. Scroll down to the Artifacts section and download the artifact file.
  3. Extract the artifact’s ZIP file to a folder on your computer.
  4. Navigate to about://extensions in your browser.
  5. Enable Developer mode and click Load unpacked.
  6. Select the downloaded ZIP file and click Select Folder.

Firefox

  1. Navigate to the Actions section and click Compile for Firefox.
  2. Scroll down to the Artifacts section and download the artifact file.
  3. Extract the artifact’s ZIP file to a folder on your computer.
  4. Navigate to about:addons in your browser.
  5. Click the gear icon and select Install Add-on From File.
  6. Select the downloaded ZIP file and click Select Folder.

Osprey should now be installed in your browser.

Getting Help

For support or queries, please open an issue in the Issues section.

GitHub:

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