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Chrome Web Store
30Versions
1Code reviewed

Caution required

Suspicious in code review

Our reviewer found behaviour consistent with malware, but not enough to confirm it. Treat this extension as untrusted until it has been re-reviewed.

1 critical finding in this extension’s code

1 critical
1 high
1 low
1516 indicators
1 version analysed

Every finding is verified by a security analyst. Unlock the code evidence, indicators and version history.

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What our analysis found

Astar VPN - Free and fast VPN for everyone, used by 200,000 people, is rated caution by Extension Auditor. Our code review reported 3 findings (1 critical, 1 high, 1 low), led by obfuscation. Its permissions mean it can read and change data on all websites, can inject scripts into pages and can observe network requests.

Key findings

  • Critical

    Obfuscation

    The extension uses an anti-debugging technique: it calls debugger and measures the elapsed time. If the debugger is active, the delay exceeds 100ms, and the extension reloads to avoid analysis. This is a common tactic in malicious code to hinder reverse engineering.

  • High

    Unauthorized Data Collection

    The extension sends personal data (login ID, hashed password, device UUID, OS, browser, etc.) to dynamic remote domains ([domain withheld], [domain withheld], [domain withheld]) that are not disclosed in the CWS privacy policy. The listing states 'none declared' for data collection, which is false.

  • Low

    Network Interception

    Removes X-Frame-Options and Frame-Options headers for [domain withheld], a domain not listed in the publisher's privacy policy. This could enable clickjacking attacks on that domain.

Analyst notes

The extension implements anti-debugging (debugger; performance timing check) and sends undisclosed user credentials and device fingerprints to remote domains ([domain withheld], [domain withheld], [domain withheld]) not covered by the publisher's privacy policy. The CWS listing declares no data collection, but the extension collects login ID, hashed password, UUID, OS, and browser info. These behaviors are suspicious and violate transparency expectations.

Astar VPN - Free and fast VPN for everyone

Astar VPN - Free and fast VPN for everyone Chrome extension security report

ID: jajilbjjinjmgcibalaakngmkilboobh

Supported Languages

🇨🇳Chinese (Simplified)
🇺🇸English

Extension Info & Metadata

Status
Active
Version
1.3.8
Size
5.38 MB
Rating
3.0/5
Reviews
4,700
Users
200,000
Type
Extension
Updated
Jan 25, 2026
Category
Privacy & security
Price
Free
Featured
No
Visibility
Listed
Mature
No
By Google
No
Trusted
No
Download CRX
Chrome Web Store
Report Issue
This publisherTrack record
2extensions
All still listed

Publisher Contextual Analysis

Author
https://astarvpn.com/index.html
Privacy
Privacy Policy
Help
Help Center
MX records exist
Yes
Domain exists
Yes
Is disposable
No
Is role-based
No
Mailbox exists
Yes
Website
Visit
Extensions
2
Active
2
Obsolete
0
Listed
2
Unlisted
0
Users
200,030

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Screenshots & videos

Screenshot 1
Screenshot 2

Install growth

Item
Type
Severity
Description
proxy
Permission
Critical
This permission allows the extension to control the browser's proxy settings. Rated Critical because it can route all traffic through potentially malicious proxies, enabling man-in-the-middle attacks and traffic monitoring.
webRequest
Permission
Critical
This permission enables the extension to monitor and analyze all web requests made by the browser. Rated Critical because it can observe all network traffic including sensitive data, track browsing behavior, and gather authentication tokens.
webRequestAuthProvider
Permission
Critical
This permission allows the extension to handle authentication requests and modify authentication headers. Rated Critical because it can intercept login credentials, session tokens, and modify authentication flows to compromise accounts.
declarativeNetRequest
Permission
Critical
This permission allows the extension to define rules to block, redirect, or modify network requests. Rated Critical because it can control all network traffic, potentially blocking security updates or redirecting to malicious sites.
declarativeNetRequestWithHostAccess
Permission
Critical
This permission combines network request modification with host permissions. Rated Critical because it can modify requests for specific domains, potentially targeting sensitive websites with precise attack rules.
privacy
Permission
Critical
This permission allows modification of Chrome's privacy settings. Rated Critical because it can disable security features, modify network configurations, and compromise browser security settings.
scripting
Permission
Critical
This permission allows injection and execution of JavaScript on any webpage. Rated Critical because it can modify page content, steal sensitive data, and inject malicious code into any site the extension has access to.
<all_urls>
Host
Critical
Broad host access — the extension can read/modify content on every website.
history
Permission
High
This permission grants access to your complete browsing history. Rated High because it can track all visited websites, reveal sensitive browsing patterns, and expose private information.
Broad Host Permissions
Risk Factor
High
This extension has broad host permissions allowing it to access many or all websites.
Broad Content Script Access
Risk Factor
High
This extension can inject scripts into any website.
declarativeNetRequestFeedback
Permission
Medium
This permission provides network request modification logs. Rated Medium because it can monitor network request changes and debug traffic modifications.
management
Permission
Medium
This permission manages other installed extensions. Rated Medium because it can enable/disable other extensions and modify their settings, with changes being visible to users.
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.
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.
alarms
Permission
Low
This permission schedules periodic tasks. Rated Low because it can only trigger events at specified times without access to sensitive data.
notifications
Permission
Low
This permission displays system notifications. Rated Low because it can only show user-visible notifications without accessing system data.
  • 1 critical
  • 1 high
  • 1 low

The file, code excerpt and explanation behind each finding are part of the full report. No conclusion has been withheld — only the evidence. The verdict above already reflects everything found here.

1 critical finding in this extension’s code

1 critical
1 high
1 low
1516 indicators
1 version analysed

Every finding is verified by a security analyst. Unlock the code evidence, indicators and version history.

Unlock this report — $4.99Start 7-day trial — all reports
One-time payment · Secure checkout by Stripe

About this extension

Astar VPN - Free and fast VPN for everyone

Read the publisher’s full description

Astar VPN - Free and fast VPN for everyone, encrypt your connection, access our secure proxy servers and unblock websites easily. Astar VPN is a plug-and-play product that can be used immediately after installation. Click the "Connect" button to establish a secure and fast proxy tunnel between you and our VPN server. After the proxy is successfully enabled, the browser's WebRTC function will automatically stop; after the proxy is stopped, the browser's WebRTC function will also start. Global proxy and designated proxy functions. Global proxy: All requests go through the proxy, and support blacklist settings for domain names that do not go through the proxy. Designated proxy: Specify the domain name to go through the proxy. Ad Blocker: Block ads, disable trackers, and prevent your data from being collected.

User reviews

Extension files

Browse and explore files within this extension package

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URLs
951
IPv4
55

URLs

View the external URLs this extension communicates with to understand its network activity and data interactions.

No URLs found
No IP addresses found

1 critical finding in this extension’s code

1 critical
1 high
1 low
1516 indicators
1 version analysed

Every finding is verified by a security analyst. Unlock the code evidence, indicators and version history.

Unlock this report — $4.99Start 7-day trial — all reports
One-time payment · Secure checkout by Stripe
Version
Size
Verdict
Findings
Permhash
1.3.8
Latest
5.38 MBCaution0
29f55972c34c82952d73f90c9c2499f9ee549ff65ab07acca1c5ea8e0158106e
1.3.7
5.40 MBNot scanned—
29f55972c34c82952d73f90c9c2499f9ee549ff65ab07acca1c5ea8e0158106e
1.3.6
5.40 MBNot scanned—
29f55972c34c82952d73f90c9c2499f9ee549ff65ab07acca1c5ea8e0158106e
1.3.5
5.40 MBNot scanned—
29f55972c34c82952d73f90c9c2499f9ee549ff65ab07acca1c5ea8e0158106e
1.3.3
1.84 MBNot scanned—
13b751eeb9514d4606082f5b9b8a6ed3ef191406510c3c9c27c17759bf1ca3f4
1.3.1
2.33 MBNot scanned—
13b751eeb9514d4606082f5b9b8a6ed3ef191406510c3c9c27c17759bf1ca3f4
1.3.0
4.66 MBNot scanned—
c92571fa8b8578aba35adcb6978f684fad7f3ce9f39745828847efca3d4a055c
1.2.9
4.66 MBNot scanned—
c92571fa8b8578aba35adcb6978f684fad7f3ce9f39745828847efca3d4a055c
1.2.8
4.66 MBNot scanned—
c92571fa8b8578aba35adcb6978f684fad7f3ce9f39745828847efca3d4a055c
1.2.7
4.66 MBNot scanned—
c92571fa8b8578aba35adcb6978f684fad7f3ce9f39745828847efca3d4a055c
Showing 1 to 10 of 30 rows
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Code Diff

Compare extension code between any two versions.

0 changed files detected

No comparable text files found between these versions.

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