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166 indicators in this extension

166 indicators
0 versions analysed

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What our analysis found

JShelter, used by 7,000 people, is not yet reviewed by Extension Auditor. Its permissions mean it can read and change data on all websites, can inject scripts into pages and can observe network requests. It comes from a trusted publisher and was last updated in September 2026.

JShelter

JShelter Chrome extension security report

ID: ammoloihpcbognfddfjcljgembpibcmb

Supported Languages

🇧🇷Brazilian Portuguese
🇨🇿Czech
🇺🇸English
🇫🇮Finnish
🇫🇷French
🇵🇱Polish
🇷🇺Russian

Extension Info & Metadata

Status
Active
Version
0.24.5
Size
0.53 MB
Rating
4.5/5
Reviews
35
Users
7,000
Type
Extension
Updated
Sep 22, 2026
Category
Privacy & security
Price
Free
Featured
Yes
Visibility
Listed
Mature
No
By Google
No
Trusted
Yes
This publisherTrack record
1extension
All still listed

Publisher Contextual Analysis

Trusted
Author
jshelterdevs
MX records exist
Yes
Domain exists
Yes
Is disposable
No
Is role-based
No
Mailbox exists
Yes
Website
Visit
Extensions
1
Active
1
Obsolete
0
Listed
1
Unlisted
0
Users
7,000

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Screenshots & videos

Screenshot 1
Screenshot 2
Screenshot 3
Screenshot 4
Screenshot 5

Install growth

Item
Type
Severity
Description
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.
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.
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.
Dangerous Permission Combination: scripting,<all_urls>,webRequest
Risk Factor
Critical
Enables sophisticated data theft through script injection and traffic monitoring
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: Early script execution enables pre-emptive content manipulation• 10% increase: About:blank access enables potential sandbox escape vectors
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.
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.
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.
Early Content Script Execution
Risk Factor
Medium
This extension runs content scripts at document_start.
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.

166 indicators in this extension

166 indicators
0 versions 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
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About this extension

Extension for increasing security and privacy level of the user.

Read the publisher’s full description

What is JShelter? JShelter is a browser extension to give back control over what your browser is doing. A JavaScript-enabled web page can access much of the browser's functionality, with little control over this process available to the user: malicious websites can uniquely identify you through fingerprinting and use other tactics for tracking your activity. JShelter aims to improve the privacy and security of your web browsing. How does it work? Like a firewall that controls network connections, JShelter controls the APIs provided by the browser, restricting the data that they gather and send out to websites. JShelter adds a safety layer that allows the user to choose if a certain action should be forbidden on a site, or if it should be allowed with restrictions, such as reducing the precision of geolocation to the city area. This layer can also aid as a countermeasure against attacks targeting the browser, operating system or hardware. Please see the FAQ (https://jshelter.org/faq/) and our blog (https://jshelter.org/blog/) for more information about the extension. What is the threat model? https://jshelter.org/threatmodel/ Can I read a paper about the extension? Yes, see https://arxiv.org/abs/2204.01392 Note that JShelter can also be used to learn the origin of the calls for JavaScript APIs that are often misused for browser fingerprinting with Fingerprint Detector report. The detected calls in a web page can be exported as JSON.

User reviews

Extension files

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URLs
164
IPv4
1
IPv6
1

URLs

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No URLs found
No IP addresses found

166 indicators in this extension

166 indicators
0 versions 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
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Version
Size
Verdict
Findings
Permhash
0.24.5
Latest
0.53 MBNot scanned—
399c92da62cd8b2f6a4b12e981b7b79936b8bce0391f86bb837adffded5e3481
0.24.4
0.53 MBNot scanned—
399c92da62cd8b2f6a4b12e981b7b79936b8bce0391f86bb837adffded5e3481
0.24.1
0.53 MBNot scanned—
399c92da62cd8b2f6a4b12e981b7b79936b8bce0391f86bb837adffded5e3481
0.24
0.51 MBNot scanned—
399c92da62cd8b2f6a4b12e981b7b79936b8bce0391f86bb837adffded5e3481
0.23.1
0.51 MBNot scanned—
399c92da62cd8b2f6a4b12e981b7b79936b8bce0391f86bb837adffded5e3481
0.23
0.51 MBNot scanned—
399c92da62cd8b2f6a4b12e981b7b79936b8bce0391f86bb837adffded5e3481
0.22.1
0.46 MBNot scanned—
84f6430aabb78625f606ba1ab68c2b4557c9a603f22e1064ace1929fad98b85d
0.22
0.46 MBNot scanned—
84f6430aabb78625f606ba1ab68c2b4557c9a603f22e1064ace1929fad98b85d
0.21
0.46 MBNot scanned—
84f6430aabb78625f606ba1ab68c2b4557c9a603f22e1064ace1929fad98b85d
0.19
0.43 MBNot scanned—
c900c456b2e18a77509a75216add872c020d23b1408c524147adcd6280df7092
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