Chrome Web Store
33Versions
1Code reviewed

No malware found

In code review (v1.8.2)

Our reviewer read version 1.8.2 — the most recent version we have reviewed — and found no malicious behaviour. The version shown here has not been individually reviewed yet.

What our analysis found

2FAS Auth - Two Factor Authentication, used by 50,000 people, showed no malicious code in Extension Auditor's review. It comes from a trusted publisher and was last updated in September 2026.

Analyst notes

The extension is a legitimate 2FA authenticator that pairs with its companion mobile app. All network requests go to the publisher's own domains ([domain withheld], [domain withheld]), consistent with the disclosed purpose. Permissions like webNavigation, tabs, and host_permissions are necessary for injecting 2FA tokens into login pages. The code shows no obfuscation, no unauthorized data collection beyond what is disclosed in the CWS listing (User activity, Website content), and error logging is opt-in. The ML model's signals (e.g., high innerHTML counts) are due to the extension's natural DOM manipulation for auto-submit and notification features, not malice.

2FAS Auth - Two Factor Authentication

2FAS Auth - Two Factor Authentication Chrome extension security report

ID: dbfoemgnkgieejfkaddieamagdfepnff

Supported Languages

🇺🇸English

Extension Info & Metadata

Status
Active
Version
1.9.2
Size
5.31 MB
Rating
3.6/5
Reviews
117
Users
50,000
Type
Extension
Updated
Sep 28, 2026
Category
Privacy & security
Price
Free
Featured
No
Visibility
Listed
Mature
No
By Google
No
Trusted
Yes
This publisherTrack record
2extensions
All still listed
Scanned by Extension Auditor — Low RiskDevelopers: embed this badge to link to this report.

Publisher Contextual Analysis

Trusted
Author
Two Factor Authentication Service, Inc.
MX records exist
Yes
Domain exists
Yes
Is disposable
No
Is role-based
Yes
Mailbox exists
Yes
Website
Visit
Extensions
2
Active
2
Obsolete
0
Listed
2
Unlisted
0
Users
60,000

Email Change History

1 change
Jul 4, 2025

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Screenshots & videos

Screenshot 1
Screenshot 2
Screenshot 3
Screenshot 4
Screenshot 5

Install growth

Item
Type
Severity
Description
webNavigation
Permission
High
This permission enables monitoring of all browser navigation events and transitions. Rated High because it can track every page visit, navigation method, and browsing pattern, potentially exposing sensitive browsing behavior and user activities.
Contextual Risk Factors
Risk Factor
High
The following context increases the overall risk: • 10% increase: About:blank access enables potential sandbox escape vectors
activeTab
Permission
Medium
This permission grants temporary access to the current tab. Rated Medium because it can access current page content when invoked, though limited to user-initiated actions.
tabs
Permission
Medium
This permission enables tab management and monitoring. Rated Medium because it can track open tabs, access tab metadata, and monitor user browsing patterns.
storage
Permission
Medium
This permission allows storing data locally in the browser. Rated Medium because it can persist sensitive user data, track user activities over time, and potentially store malicious payloads.
unlimitedStorage
Permission
Medium
This permission removes storage quota restrictions. Rated Medium because it can store large amounts of user data without limits, potentially impacting browser performance and storing extensive tracking data.
*://*.2fas.com/*
Host
Medium
Host permission — access limited to this URL pattern.
About:blank Access
Risk Factor
Medium
This extension can run content scripts in about:blank pages.
notifications
Permission
Low
This permission displays system notifications. Rated Low because it can only show user-visible notifications without accessing system data.
contextMenus
Permission
Low
This permission adds items to browser context menus. Rated Medium because it only modifies right-click menus without access to page content.
alarms
Permission
Low
This permission schedules periodic tasks. Rated Low because it can only trigger events at specified times without access to sensitive data.

About this extension

2FAS Browser Extension is simple, private, and secure: 1 click, 1 tap, and your token is automatically entered!

Read the publisher’s full description

Add 2FAS Auth to your web browser with our extension! Enter 2FA tokens automatically without re-typing for better security! The 2FAS Auth Browser Extension allows you to log in to any online service with 2-factor authentication enabled, faster! Easy set up in three steps: 1. Install the extension on your desktop browser 2. Open the 2FAS Auth app on your phone and pair your phone with your desktop browser 3. Start using the 2FAS Auth Browser Extension When you want to log in using a 2FA token, simply select two-factor authentication token input field, click the 2FAS Auth Browser Extension icon, and confirm login on your phone! Secure and fast log in. Simply pair the service you want to login to with your 2FAS Auth app, then 2FAS Auth will automatically select your token for future logins, no searching or typing required! Free access — no account required. 2FAS Auth is an easy-to-use authentication app that protects access to your online services and accounts. Relying on a single password for your personal accounts, like Facebook or Instagram, often puts your data and sensitive information at risk. The 2FAS Authenticator App generates one-time codes called Time-based One-time Passwords (TOTP) or HMAC-based (event-based) One-time Passwords (HOTP) for your account. By creating these codes offline and changing them every 30 seconds or every login, 2FAS drastically increases the security of your information.

User reviews

Extension files

Browse and explore files within this extension package

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No network indicators were extracted from this version.

Version
Size
Verdict
Findings
Permhash
1.9.2
Latest
5.31 MBNot scanned—
7172fd9a282aa7d00224d8850b4d3a9f2d96186664f187ecc042e790a3fc02bd
1.9.1
5.31 MBNot scanned—
7172fd9a282aa7d00224d8850b4d3a9f2d96186664f187ecc042e790a3fc02bd
1.9.0
5.28 MBNot scanned—
7172fd9a282aa7d00224d8850b4d3a9f2d96186664f187ecc042e790a3fc02bd
1.8.4
5.26 MBNot scanned—
7172fd9a282aa7d00224d8850b4d3a9f2d96186664f187ecc042e790a3fc02bd
1.8.3
5.26 MBNot scanned—
13c6e01b6b728319cc5fd2a8331a012ab5f11c01618ab510b582e2c2fa62bb36
1.8.2
5.24 MBNo malware found0
09517614da3e99551164ff3766a08408baa339a1ac33abb9cb03a68e54059af7
1.8.1
5.24 MBNot scanned—
09517614da3e99551164ff3766a08408baa339a1ac33abb9cb03a68e54059af7
1.8.0
5.24 MBNot scanned—
09517614da3e99551164ff3766a08408baa339a1ac33abb9cb03a68e54059af7
1.7.2
5.23 MBNot scanned—
09517614da3e99551164ff3766a08408baa339a1ac33abb9cb03a68e54059af7
1.7.0
5.22 MBNot scanned—
09517614da3e99551164ff3766a08408baa339a1ac33abb9cb03a68e54059af7
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Code Diff

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0 changed files detected

No comparable text files found between these versions.

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