# FUo

> Prevents duo MFA from nagging about out of date operating systems and browsers.

Canonical page: [https://chrome-stats.com/d/fuo](https://chrome-stats.com/d/fuo)

## Overview

- **ID:** `fuo`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** YourFin
- **Category:** appearance,other
- **Rating:** 5.00 / 5 (1 ratings)
- **Version:** 1.0.2
- **Last updated:** 2019-12-15
- **First published:** 2019-12-14
- **Size:** 10 KB
- **Data as of:** 2026-09-11
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/fuo/)
- **Website:** [https://github.com/YourFin/FUo/issues](https://github.com/YourFin/FUo/issues)

## Description

FUo is a Firefox add-on that prevents Duo multi-factor authentication from nagging about slightly out of date browser or operating system versions.

## Rankings

- #130,490 — Overall

## Permissions and access

### Permissions

- `webRequest`
- `webRequestBlocking`
- `http://*.duosecurity.com/*`
- `https://*.duosecurity.com/*`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Low risk likelihood

### Analysis details

- Allows the extension to observe and analyze traffic in flight for the selected hosts.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Similar extensions and apps

- [Update Notifier](https://chrome-stats.com/d/update-notifier) — 1 users
- [Browser MFA Authenticator](https://chrome-stats.com/d/browser-mfa-authenticator) — 30 users
- [2FAuth](https://chrome-stats.com/d/2fauth) — 18 users, 5.00 / 5
- [Moz Update Checker](https://chrome-stats.com/d/moz-update-checker) — 1 users, 5.00 / 5
- [Focus Guard](https://chrome-stats.com/d/focus-guard-wylyk)
- [Auto 2FA](https://chrome-stats.com/d/auto-2fa) — 198 users, 4.00 / 5
- [Under New Management](https://chrome-stats.com/d/under-new-management-v2) — 248 users, 4.50 / 5
- [Extension Update Checker](https://chrome-stats.com/d/extension-update-checker) — 24 users, 4.50 / 5
- [MFAuth - 2FA Authenticator](https://chrome-stats.com/d/mfauth) — 17 users
- [duo-ext](https://chrome-stats.com/d/chloe-luong) — 6 users
- [Ignore SLS Browser Upgrades](https://chrome-stats.com/d/ignore-sls-browser-upgrades)
- [2FA Notifier](https://chrome-stats.com/d/2fa-notifier) — 15 users, 4.20 / 5

---

Source: [Chrome-Stats](https://chrome-stats.com/d/fuo)