Browser Leak Test

BrowserLeaks – Web Browser Fingerprinting – Browsing Privacy

It has long been believed that IP addresses and Cookies are the only reliable digital fingerprints used to track people online. But after a while, things got out of hand when modern web technologies allowed interested organizations to use new ways to identify and track users without their knowledge and with no way to avoid owserLeaks is all about browsing privacy and web browser fingerprinting. Here you will find a gallery of web technologies security testing tools that will show you what kind of personal identity data can be leaked, and how to protect yourself from AddressThe primary tool that illustrates server-side capabilities to reveal the user’s identity. It has basic features such as showing Your IP Address and HTTP Headers, IP-based geolocation (GeoIP) determines your Country, State, City, ISP/ASN, Local Time. There’s also TCP/IP OS Fingerprinting, WebRTC Leak Tests, DNS Leak Test, IPv6 Leak ScriptYou can get a large amount of data about the system using the basic functionality of JavaScript and modern Web APIs. Such as User-Agent, Screen Resolution, System Language, Local Time, CPU architecture and the number of logical cores, Battery Status API, Network Information API, Web Audio API, Installed Plugins, and Leak TestIP address detection using JavaScript. Starting work on WebRTC API, the web browser communicates with the STUN server and shares information about local and public IP addresses even if you are behind NAT and use a VPN or Proxy. This tool will show if your real public IP is leaking FingerprintingBrowser Fingerprinting with no user agent identifiers, only through the HTML5 Canvas element. The method is based on the fact that the same canvas-code can produce different pixels on a different web browser, depending on the system on which it was ReportWebGL Browser Report checks WebGL support in your browser, produce WebGL Fingerprinting, exposes your Graphics Card and other WebGL and GPU capabilities more or less related web browser identity. Also, this page contains the How-To enable or disable WebGL in your web FingerprintingFont metrics-based fingerprinting. System fonts enumeration. Font fingerprinting techniques are based on measuring the dimensions of elements filled with text or single unicode glyphs. Font rendering in browsers is affected by many factors, and these measurements may olocation APIHTML5 Geolocation API testing tool. Checks browser permissions for geolocation. Based on the latitude-longitude and accuracy received from the browser, it shows the radius of your location on the interactive map. Features DetectionWeb Browser’s Features Detection. This page contains a huge list of HTML5 feature detectors, whose support or lack of support may affect your browser’s identity profile if you try to change ntent FiltersThe set of demos that try to determine Content Filters usage, is the applications that operate between the browser and the web page and manipulate the connection and content of a visited web page. Among them are Tor Browser, Privoxy, Adblock AppletWhat permissions usual unsigned Java Applet has? It can be the extended Java Machine description, OS Detection: Name, Version, Arch, User Locale, and some file system-related information. CPU Cores count, amount of Dedicated Memory, JVM instance Uptime, Network Interfaces PlayerDescribes the Flash Player Runtime properties such as Flash Version, Plugin Type, Operating System, Manufacturer, System Language, Web Browser Architecture, Screen Resolution, and other properties that describe the hardware and multimedia lverlightGetting system information using Silverlight Plug-In, installed in your web browser. Shows your system environment details such as OS Version, Processor Count, System Uptime, Time Zone, Installed Fonts, System and User Culture, Region and Language OS settings, Silverlight Isolated Storage ToolsHere is a list of new, experimental, controversial, broken, and deprecated tools:Client Hints Test – HTTP and JavaScript Client Hints Test Leak Test – Standalone page for DNS Leak Client Test – Shows the SSL/TLS capabilities, TLS Fingerprint, Mixed Content Media Queries – Pure-CSS Media Queries Test ientRects Fingerprinting – Displays the exact pixel position and size of the rectangle of drawn HTML Media Login Detection – Cross-origin login detection for most major social Not Track – Detects DNT support in your web refox Resources Reader – Firefox «resource URI» fingerprinting, platform and locale ivacy PolicyThe site does not collect any data, does not keep or process any fingerprint records. All information shown is read-only. Some third-party services (Google, Disqus) may collect personalized data and set unwanted cookies. You can control everything on the Site Settings page.
IP/DNS Detect - What is your IP, what is your DNS, what ...

IP/DNS Detect – What is your IP, what is your DNS, what …

This is the kind of information that all the sites you visit, as well as their advertisers and any embedded widget, can see and collect about owser default: Fallback: If you are now connected to a VPN and you see your ISP IP, then your system is leaking WebRTC requestsDNS Address detectionIf you are now connected to a VPN and between the detected DNS you see your ISP DNS, then your system is leaking DNS requestsIf the above map is your correct location and you don’t want to allow this kind of tracking, ensure that geolocation feature of your browser is disabled or asking a permission, or install an extension that fake your 64. 235. 38. 185AirVPN Exit Node: NoCountry: United States (US)Region: California (CA)City: Santa ClaraMetro (US-Only): 807Time Zone: America/Los_AngelesLatitude & Longitude: 37. 353, -121. 9543 Geolocation map (Google Map) based on IP Address Activate Accuracy Radius:1000 KMLast data update:Tue, 05 Oct 2021 12:06:40 +0000Detected informationYour User Agent: Mozilla/5. 0 (Windows NT 6. 1; Win64; x64) AppleWebKit/537. 36 (KHTML, like Gecko) Chrome/92. 0. 4515. 107 Safari/537. 36What document you can accept: text/html, application/xhtml+xml, application/xml;q=0. 9, image/avif, image/webp, image/apng, */*;q=0. 8, application/signed-exchange; v=b3;q=0. 9What encoding you can accept: gzip, deflate, brSystem information(your browser, your language, your operating system, etc)Screen information(your display hardware)Plugins information(your browser plugins)Mime-Types information(what document you can read)HTTP Request HeadersUser-Agent: Mozilla/5. 36Accept-Encoding: gzip, deflate, brAccept: text/html, application/xhtml+xml, application/xml;q=0. 9Connection: keep-aliveHost:
What are WebRTC leaks?
WebRTC implement STUN (Session Traversal Utilities for Nat), a protocol that allows to discover the public IP address. To disable it:
Mozilla Firefox: Type “about:config” in the address bar. Scroll down to “erconnection. enabled”, double click to set it to false.
Google Chrome: Install Google official extension WebRTC Network Limiter.
Opera: Type “about:config” in the address bar or go to “Settings”. Select “Show advanced settings” and click on “Privacy & security”. At “WebRTC” mark select “Disable non-proxied UDP”.
What are DNS leaks?
In this context, with “DNS leak” we mean an unencrypted DNS query sent by your system OUTSIDE the established VPN tunnel.
Why does my system leak DNS queries?
In brief: Windows lacks the concept of global DNS. Each network interface can have its own DNS. Under various circumstances, the system process will send out DNS queries without respecting the routing table and the default gateway of the VPN tunnel, causing the leak.
Should I be worried for a DNS leak?
If you don’t want that your ISP, and anybody with the ability to monitor your line, knows the names your system tries to resolve (so the web sites you visit etc. ) you must prevent your system to leak DNS. If you feel that you’re living in a human rights hostile country, or in any way the above mentioned knowledge may harm you, you should act immediately to stop DNS leaks.
How does torrent detection work?
To detect data from your torrent client we provide a magnet link to a fake file. The magnet contains an url of a controlled by us tracker which archives the information coming from the torrent client.
WebRTC Leak Test: Prevent IP Address Leaks | ExpressVPN

WebRTC Leak Test: Prevent IP Address Leaks | ExpressVPN

How to use the WebRTC leak checker
What’s the difference between public and local IP addresses?
When you use the leak checker you’ll see two classes of IP addresses displayed: public and local.
Public IPs are highly specific to you. They form part of your identity on the internet. When you use a VPN, sites see the VPN server’s public IP address instead of yours, and your identity is protected.
However, if WebRTC detects your real public IP address when you’re connected to a VPN, as opposed to the VPN server’s, then third parties can still use it to identify you. If you see a public IP in the test results, then you may have a privacy leak.
Local IPs are not specific to you. These IPs are assigned to you by your router and are reused millions of times by routers all over the world. So if a third party knows your local IP address, it has no way of linking it directly to you. If you see a local IP in the test results, it is not a threat to your privacy.
5 steps to test for a WebRTC leak (with and without VPN)
If you’re not using a VPN you will undoubtedly be exposing some private information to third parties. (Want to learn more? See how a VPN hides your IP address to keep your information private. )
If you are using a VPN and the leak tool indicates there may be a leak, then you can perform the following leak test to be sure:
Disconnect from your VPN and open this page in a new tab or window
Make a note of any public IP addresses you see
Close the page
Connect to your VPN and reopen the page
If you still see any of the public IP addresses from Step 2, then you have a privacy leak
If you’re using a VPN and the tool specifically tells you there is no leak, you’re safe!
Want to check for other privacy leaks? Try these tools:
DNS Leak Test
IP Address Checker
What is WebRTC?
Web Real-Time Communication (WebRTC) is a collection of standardized technologies that allows web browsers to communicate with each other directly without the need for an intermediate server. Benefits of WebRTC include: faster speeds and less lag for web apps like video chat, file transfer, and live streaming.
Any two devices talking to each other directly via WebRTC, however, need to know each other’s real IP addresses. In theory this could allow a third-party website to exploit the WebRTC in your browser to detect your real IP address and use it to identify you. This is what we call a WebRTC leak.
Any leak of your public IP address is a threat to your privacy, but WebRTC leaks are lesser-known and easily overlooked, and not all VPN providers protect you from them!
How does a WebRTC leak put my privacy at risk?
The problem with WebRTC is that it uses techniques to discover your IP addresses that are more advanced than those used in “standard” IP detection.
How does WebRTC detect my IPs?
WebRTC discovers IPs via the Interactive Connectivity Establishment (ICE) protocol. This protocol specifies several techniques for discovering IPs, two of which are covered below.
STUN/TURN servers
STUN/TURN servers play two key roles in WebRTC: They allow web browsers to ask the question “What are my public IPs? ” and they also facilitate two devices talking to each other even if they are behind NAT firewalls. The former is the one that can affect your privacy. STUN/TURN servers discover your IPs much as a website sees your IPs when you visit it.
Host candidate discovery
Most devices have multiple IP addresses associated with their hardware. Usually these are hidden from websites and STUN/TURN servers via firewalls. However, the ICE protocol specifies that browsers can gather these IPs simply by reading them off your device.
The IPs most commonly associated with your device are local IPv4 addresses, and discovery of them won’t affect your privacy. If you have IPv6 addresses, however, then your privacy could be at risk.
IPv6 addresses don’t work quite the same as IPv4 addresses. Generally, an IPv6 address is a public one (which means it is unique to you). If you have an IPv6 address associated with your device, and it is discovered via ICE, then your privacy could be exposed.
A malicious website could use STUN/TURN servers or host candidate discovery to trick your browser into revealing an IP address that could identify you, all without your knowledge.
WebRTC leaks: Which browsers are most vulnerable?
As of this writing, users of Firefox, Chrome, Opera, and Microsoft Edge are most vulnerable to WebRTC leaks because these browsers have WebRTC enabled by default.
Microsoft Edge
Mozilla Firefox
Google Chrome
Browsers that are most vulnerable to WebRTC leaks
Note that you may be safe from WebRTC leaks in one browser and not in another. If you regularly use multiple browsers, then you should consider using the ExpressVPN WebRTC Leak Test on each of them.
What does ExpressVPN do to protect me from WebRTC leaks?
ExpressVPN works hard to ensure its apps protect you from WebRTC leaks. When you open new web pages while connected to ExpressVPN, your public IP addresses won’t leak.
Some browsers, however, can be aggressive when it comes to holding onto data from old tabs. If you have a tab open from before you connected to the VPN, your real IP address may be cached in memory by the browser. These IPs can persist even if you refresh the tab, which puts your privacy at risk.
The ExpressVPN browser extension (currently available for Chrome, Firefox, and Edge) solves this problem by letting you completely disable WebRTC from the settings menu, which will ensure that you’re not vulnerable to any caching issues.
How ExpressVPN’s dedicated leak-proofing engineers keep you safe
ExpressVPN protects you from a wide spectrum of WebRTC leaks across different browsers and platforms. Because WebRTC is still a relatively new technology, it’s important to continually test different scenarios for WebRTC leaks across different platforms and browsers. ExpressVPN leads the industry with a team of dedicated engineers who constantly investigate new leak vectors and rapidly develop any necessary fixes.
Learn more about ExpressVPN’s latest leak-proofing developments.
How else can I prevent WebRTC leaks?
In addition to using ExpressVPN, you may be able to guard against leaks by manually disabling WebRTC in your browser. *
How to disable WebRTC in Firefox on desktop
Type about:config into the address bar
Click the “I accept the risk! ” button that appears
Type erconnection. enabled in the search bar
Double-click to change the Value to “false”
This should work on both mobile and desktop versions of Firefox.
How to disable WebRTC in Chrome on desktop
There are two Chrome extensions known to successfully block WebRTC leaks:
uBlock Origin is a general all-purpose blocker that blocks ads, trackers, malware, and has an option to block WebRTC. WebRTC Network Limiter is an official Google add-on that specifically stops IP leaks without totally blocking WebRTC.
How to disable WebRTC in Safari on desktop
There’s no need to disable WebRTC in Safari. Safari’s permissions model is stricter than those of most browsers. By default, no IP addresses are made available to websites except the one you use to access the site. Therefore you shouldn’t need to take any additional action to prevent WebRTC leaks in Safari. Note, however, that if you grant any particular site permission to use audio or video capture, you might expose your IPs.
How to disable WebRTC in Opera on desktop
To disable WebRTC in Opera, you’ll need to download the extension WebRTC Leak Prevent and follow these steps:
Access the extension’s settings (View → Show Extensions → WebRTC Leak Prevent → Options)
Choose “Disable non-proxied UDP (force proxy)” from the dropdown menu
Click Apply settings
How to disable WebRTC in Microsoft Edge
Unfortunately, there’s currently no way to completely disable WebRTC in Microsoft Edge. However, you can set your browser to hide your local IP address if you:
Type about:flags into the address bar
Check the option marked Hide my local IP address over WebRTC connections
As mentioned above, revealing your local IP address is not a threat to your privacy, so the steps above offer little benefit. Therefore the best way to stop WebRTC leaks while using Microsoft Edge is by using the ExpressVPN app for Windows.
*Disabling WebRTC probably won’t affect normal web browsing. Most websites don’t depend on it… yet. But as WebRTC becomes more popular, the functionality of certain sites may decline if you disable it completely.
What if I’m connected to ExpressVPN, and I still see a WebRTC leak on this page?
Contact ExpressVPN Support, and we’ll get that sorted out promptly.

Frequently Asked Questions about browser leak test

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