WebDevAuthn

Name: WebDevAuthn
Author: DarkThanos

By: DarkThanos Add-on

Debug FIDO2 requests and responses

Overview

Firefox Add-ons Store

Daily users

56 ▼ 1

Data as of 2026-07-29

Version:

0.6

Last updated: 2023-02-01

Features & Capabilities

Analyse FIDO2/WebAuthn requests and responses

Analyser Features:

Capture WebAuthn requests
Analyse WebAuthn options (show info, warnings & errors)
Unpack/Decode WebAuthn authenticator responses
Virtual Authenticator Device (for custom responses)

Virtual Authenticator Device

OS independent
Supports packed attestation
Supports wrapped keys to credentials id
Access to the private key of the generated credentials
Testing mode to assess implementations
Multiple supported algorithms

GitHub Project: https://github.com/GramThanos/WebDevAuthn

User Growth & Download Statistics

Add-on

By:

DarkThanos

Daily users:

56 -1

Version:

0.6 Last updated: 2023-02-01

Version code:

5520307

Creation date:

2023-01-31

Risk:

Permissions:

storage

Host permissions:

<all_urls>

Content scripts matches:

Size:

23.61KB

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-07-29

Compare stats and ranking:

Ranking

# 14,720 ▼ 138

Other rankings

#55 in response keyword 10 ▼ 3#108 in algorithm keyword 3 ▼ 5#124 in debug keyword 27 ▼ 2#169 in request keyword 20 ▼ 4#224 in author keyword 13 ▼ 2

For Developers

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

DarkThanos

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/webdevauthn/

Website:

https://github.com/GramThanos/WebDevAuthn

Is WebDevAuthn Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

WebDevAuthn requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

WebDevAuthn is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
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