2FAS Auth - Two factor authentication
By: 2FAS
2FAS Auth Browser Extension is simple, private, and secured: one click, one tap, and your 2FA token is automatically entered!
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Features & Capabilities
User Growth & Download Statistics
- By:
- 2FAS
- Daily users:
- 8,450 11
- Rating:
- 3.82 (96)
- Version:
- 1.8.2 Last updated: 2026-05-27
- Version code:
- 6279839
- Creation date:
- 2022-06-22
- Risk:
- High risk impact Moderate risk likelihood
- Permissions:
- Content scripts matches:
- *
- *
- Size:
- 5.25MB
- Email:
- su*****@2fas.com
- URLs:
- Website ,Privacy policy
- Full description:
- See detailed description
- Source:
- Firefox Add-ons Store
- Data ingested on:
- 2026-06-18
- Compare stats and ranking:
- 2FAS Auth - Two factor authentication vs 2FAS Pass Browser Extension
- 2FAS Auth - Two factor authentication vs Authenticator App
- 2FAS Auth - Two factor authentication vs MFAuth - 2FA Authenticator
Contact the developer
Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Permission Change History
2025-05-05: Version 1.7.3 → 1.7.4
Remove Permissions: https://*.2fas.com/* wss://*.2fas.com/*
2024-04-05: Version 1.6.4 → 1.7.0
Add Permissions: webNavigation
2022-09-21: Version 1.2.1 → 1.2.2
Add Permissions: contextMenus
2022-08-26: Version 1.1 → 1.2
Add Permissions: notifications
User Reviews
Users praise 2FAS for its security-first approach (TOTPs stay on the phone with push approvals) and a polished, feature-rich experience, plus data export/migration and Android syncing. The main trade-off is convenience: you must approve via your mobile device for each code, which some find pointless or cumbersome compared to desktop-only workflows. Overall, it’s valued for security and portability with some workflow friction. Pros
- Security-focused design that keeps TOTPs on your phone and uses push approvals to deliver codes in-browser
- Data portability via export/migration so you can switch accounts without re-adding them
- Well-designed, feature-rich, and secure overall experience
- Good integration with Android/mobile and syncing across devices
- Open-source (foss) project nature appeals to users who prefer libre software
Cons
- Requires mobile approval for every 2FA code; not a standalone desktop solution, reducing convenience
- Some users feel the workflow is pointless because they still have to use their phone to approve each time
- Reliance on the mobile app for core functionality can lead to occasional reliability issues or bugs reported by some users
Recent reviews
by AL*****, 2026-05-28
A stupid extension and an even stupider Android app.
The biggest problem with the Android app is that you can't import or use your own .ico or .png file for the icons. With 50+ entries, it looks awful. Some entries have icons, some don't, and some have the wrong icon. It's unusable. Completely ridiculous. I uninstalled everything.
by Si*****, 2026-05-01
by Mi*****, 2026-02-12
Is 2FAS Auth - Two factor authentication 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.
2FAS Auth - Two factor authentication requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.
Risk impact analysis details
- Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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- Medium ******* ******* ************* ***** *** ** ******* *** **** ******* ****** ******** *******
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.
2FAS Auth - Two factor authentication is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.
Risk likelihood analysis details
- High This extension was recently updated in the past month. New updates may not be stable or safe.
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- Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
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