Prevents behavioral profiling by randomizing the rate at which characters reach the DOM.

Latest Version

Version

2.7

Update

October 31, 2019

Size

63.53KiB

Developer

Keyboard Privacy Extension

Prevents behavioral profiling by randomizing the rate at which characters reach the DOM.

v2.7
Updated 30/10/19:
Updated to reflect changes in the industry and ensure every type of input is protected.

v2.5
Updated 20/08/16:
Fixed lag caused by numerous textarea inputs on a given page.
Increased default \"dwell\" and \"gap\" times to 200ms.
Tested against BehavioSec 20/08/16 with a 0.02% (RED) result.

Notice:
This is a proof-of-concept plugin, following research by two independent security professionals (Paul Moore & Per Thorsheim). See https://paul.reviews/behavioral-profiling-the-password-you-cant-change/ for more details.

Source Manifest.json

{ "background": { "scripts": [ "js/background.js", "js/popup.js" ] }, "browser_action": { "default_icon": "icons/icon_safe.png", "default_popup": "popup.html", "icons": [ "icons/icon_safe.png" ], "name": "Keyboard Privacy" }, "content_scripts": [ { "js": [ "js/jquery.min.js", "js/inject.js" ], "matches": [ "http://*/*", "https://*/*" ] } ], "description": "Prevents behavioral profiling by randomizing the rate at which characters reach the DOM.", "homepage_url": "https://paul.reviews/behavioral-profiling-the-password-you-cant-change/", "icons": { "128": "icons/icon_safe128.png", "16": "icons/icon_safe16.png", "48": "icons/icon_safe.png" }, "key": "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAhB3dA2clPF5pVrooKXXb7Z21EAi0NDRj4ZxA1lHtMdZtcpBHbrqgY7iE9521ly9KucX0LJtqESV8lV8Uu0ETI1JF4XuIkQdkCclu9oV2pvm+jInL/3uqs4TOy6c3CsjnaEMHUGdmJb1WO6nJ25+p6tp5TjNKrfjoZRjZ50eqJKqny4QaKLUxw9E3J0LteSQn3LRtLIJ69gsM8N5REvo0yLXAnjLmKH24tgVzREqdf9Q04psahKjYrlqephQJw3ZZq5LzdxU2y48YztNP8MxALh8RH4Fph8H9otPQXrqszcH1XhRbZfInOAF5WlMuaxTjbhg+1xS8pOkpniX684udBQIDAQAB", "manifest_version": 2, "name": "Keyboard Privacy", "permissions": [ "tabs", "activeTab", "storage" ], "update_url": "https://clients2.google.com/service/update2/crx", "version": "2.7"}

Download CRX(63.53KiB)

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User reviews

Sylvain (ID: 000000b9a8c88831) Voted 4 ★ - Updated 07/01/2020 This seems to work @ 300ms on Keytrack but they were able to get high confidence @ 200ms for me. The Experimental port on Mozilla Addons does not work at all for me however, any chance you can finally port this to Firefox, now that they have a decent WebExtension API?

(ID: ) Voted 5 ★ - Updated 06/12/2018 It's great stuff, super interesting.

mytransceiver (ID: 000000b1ad443666) Voted 1 ★ - Updated 11/20/2017 No, as of 2017 Nov, all the "biometric" can over come this tiny trick with over 90% confidence. Even 1000 dwell/delay would not help at all.

Franco GR (ID: 000000ca1c15364c) Voted 4 ★ - Updated 05/25/2017 I've been using this extension for quite a while, both in Firefox and Chrome. It's great.

Puppette Master (ID: 0000000a8266b8dc) Voted 5 ★ - Updated 07/30/2016 With the add-on disabled, converged on a green policy for the id; during testing of the trained id, needed to set add-on to 500 each dwell/delay to confuse the tested id to red reliably. Full training with the add-on enabled at 500 dwell/delay each still converged on a green id policy; also, it still recognized the id during testing with or without the add-on enabled at 500. Full training with add-on at 1000 each converged on a red policy during training, yellow policy during testing, yellow or red identification; during testing, did not matter with or without add-on Unfortunately it seems the only thing that confuses the app is the add-on slowing down my slow connection/processor so much that it cannot get any timing data off the keyboard at all due to the latencies.

Get source code (.Zip)

Drop .crx file here or click
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Keyboard Privacy