JonDoBrowser provides strong privacy for web surfing

Thursday, September 13. 2012

Today, the JonDos GmbH publishes a new version of JonDoFox, a privacy-friendly web browser, that you may also use for anonymous surfing, e.g. over anonymous proxy servers.

What is new?

Today, JonDos releases the first beta version of JonDoBrowser, a special Firefox browser for secure web surfing, e.g. by using the anonymizing network JonDonym. Unlike to the previous JonDoFox software package, the additional security compared to Firefox is not only achieved by using add-ons: it is rather a custom Firefox distribution with slighty changed browser code, in which features that might be problematic for privacy were disabled. The effects can be seen at http://ip-check.info.

Developing a custom browser has become necessary, as the Firefox code contains more and more privacy-harming functionalities which add-ons can only fix inadequately. Since such a project is very resource consuming, the development is conducted in collaboration with the Tor project.The browser code is published under an open source license.

The beta version of JonDoBrowser is available on all desktop operating systems (Windows, Mac OS X, Linux) on our download page.

JonDo 00.18.001 uses Skype for circumventing Internet censorship

Wednesday, May 30. 2012

Today, JonDos publishes a new version of the JonDo-Software, an IP changer and IP anonymization program, that can be used for anonymous web surfing with high security anonymous proxy servers.

What is new?

The new version includes changes which make it possible to "tunnel" JonDo via Skype and thereby bypass Internet censorship. This feature is particularly interesting for countries where the JonDonym service is blocked but where it is still possible to use Skype. For these users, it will now be possible to use JonDonym for anonymous surfing despite any blocking by an Internet service provider. What additional settings need to be made for this purpose can be found in the JonDonym help: Circumvent blocking of JonDonym with Skype.

In a planned later release of this feature every JonDonym user will be able to offer his own Skype server for people of censoring countries. Thereby JonDonym and its users will be able to do more for the free use of the Internet.

This release also fixes some minor bugs and adds some options for costumizing the program.

What is JonDo?

JonDo is an open source and free-of-charge program for Windows, Linux and MacOS X. It hides the user's IP address behind an anonymous IP address. In contrast to other anonymizers (VPNs, anonymous proxy servers), the user's anonymity stays protected even against the providers (operators) of the anonymous IP address.

It is possible to test the premium service by getting a free JonDonym-Code.

Download: JonDo IP changer.

JonDo 00.16.001: Automatic error recognition and easier usability

Wednesday, September 28. 2011

Today, JonDos publishes a new version of the JonDo-Software, an IP changer and IP anonymization program, that you can use for anonymous surfing in the Internet with high security anonymous proxy servers.

What is new?

Statistics and support requests about the usage of JonDo let assume that several users of older versions do not use the software correctly, and may thereby surf the net unsecured. The current version warns the user in such a case and launches an assistant for fixing the problem if necessary. Of course, users may also consult the extensive online help for this purpose, or use the forum or the support by e-mail or ask other user in the support chat. In any case, it is recommended to visit the IP Check in order to test the own configuration for weaknesses.

Moreover, several minor bugs and stability problems have been resolved, and the program's usability has been enhanced further. By changing to new server protocols within the next four weeks, older versions of JonDo will soon be unusable. Also for this reason, users of earlier versions should update instantaneously, if possible.

What is JonDo?

JonDo is an open source and free-of-charge program for Windows, Linux and MacOS X. It hides the user's IP adress behind an anonymous IP address. In contrast to other anonymizers (VPNs, anonymous proxy servers), the user's anonymity stays protected even against the providers (operators) of the anonymous IP address.

Download: JonDo IP changer

Anonymity test „IP Check“ shows general insecurity of web proxies

Thursday, September 1. 2011

Web proxies like Anonymouse.org, Hide my Ass! or Proxify are not suitable for anonymous surfing - while this fact should already have become general knowledge, still ten thousands of users think they are anonymous on the Internet by using these services. The website IP Check now shows their privacy issues clearly to the public: Besides other sophisticated privacy tests, the site is now able to break the security all existing web proxies.

Details of the attacks

If JavaScript is allowed, attacks on web proxies are quite easy: a website may simply override the JavaScript methods that should actually protect the proxy from any attacks. There is no way on how a web proxy may prevent this. After this basic protection has been removed, the proxy may get easily bypassed by loading "unproxified" web resources over a direct IP connection from the user's browser. This leads to the user's IP address and browser data being uncovered to the visited website.

Breaking web proxies is moreover possible by introducing invalid or unusal HTML code. As web proxies interpret HTML code differently from a normal web browser, this may confuse their replacement logic: if they omit only one of the original website links, e.g. to an image or style resource, their protection will get bypassed. If moreover JavaScript is enabled, this causes some web proxies, e.g."Anonymouse" or "Hide my Ass!", to not even reach the real test site without being de-anonymized completely.

Only if all plugins and scripts are filtered by the web proxy or switched off in the browser, a few web proxies are able to resist these attacks. However, this disqualifies web proxies for general web surfing, as sooner or later you will need JavaScript in order to use the sites you want. You might moreover keep in mind that web proxies break the browser's SSL encryption to secure sites, as their principle is to act as man-in-the-middle site: They can see any data that you transfer, and your browser will not even be able to check the visited site's SSL certificate. So you should avoid web proxies anyway if you would like to transfer private data.

More Informations you may find in the description of the attacks.

What is the "IP Check"?

IP Check is a free and easy understandable anonymity test. The test shows at a glance which attacks a website may launch on your privacy. Moreover, you get recommendations for possible counter measures.

JonDoFox 2.5.3: Provides protection against new HTTP authentication attack

Thursday, August 18. 2011

Today, the JonDos GmbH publishes a new version of JonDoFox, a privacy-friendly web browser, that you may also use for anonymous surfing, e.g. over anonymous proxy servers.

What is new?

The JonDoFox research team has uncovered a new attack on web browsers: Affected are the web browsers Firefox, Chrome and Safari. By a hidden call over of a URL with HTTP authentication data, third party sites could track a user over several web sites, even if the user blocks all cookies and other tracking procedures. For doing this, it is sufficient to include a simple CSS file:

<link rel="stylesheet" type="text/css" "http://Session:638431048@ipcheck.info/auth.css.php">

You will find a demonstration of this technique on the web site ip-check.info.

JonDoFox now contains an integrated protection against this attack. Third party sites may now no longer receive HTTP authentication data from the browser. Moreover, the protection against cache and referer tracking has been enhanced. Furthermore, some detail enhancements were added, and JonDoFox is now fully compatible with the new Firefox 6. Users may therefore easily update to the new browser version.

What is JonDoFox?

JonDoFox is both a profile and an extension for the popular Mozilla Firefox web browser. It protects the user's privacy while surfing the web by removing identifying information from the browser. As it is open source software and free to use, it is an ideal add-on for anonymization services like JonDonym and Tor, but may also be used without anonymization software, just for safer surfing.

Download: Anonymous surfing with JonDoFox

JonDo 00.15.004: Bitcoin, connection manipulation protection and higher efficiency

Tuesday, July 19. 2011

Today, JonDos publishes a new version of the JonDo-Software, an IP changer and IP anonymization program, that you can use for anonymous surfing in the Internet with high security anonymous proxy servers.

What is new?

JonDo now integrates Bitcoin as additional payment method for the JonDonym Premium services: For every new payment, a new random Bitcoin address is generated. This hides against third parties for what a customer pays. Additionally, all data about the payment proccess are deleted after completion in order to fulfill even the highest privacy requirements. But of course, even if the identity of a buyer was known, neither JonDos nor the JonDonym operators could see what he/she does in the JonDonym system.

Moreover, a stability protection against connection manipulations has been developed: In some countries, especially those in the middle east, HTTPS/SSL connections get manipulated by the resprective providers. Using a man-in-the-middle-attack, they aim to annihilate the encryption of web connections. Apparently, this is especially done on standard web ports like 80 and 443, while other ports remain untouched. Such manipulations may not uncover JonDonym connections, but block them, however. JonDo may now recognize such manipulations and then automatically connects to JonDonym service using alternative, non-manipulated ports.

The new software version furthermore provides a more efficient upload protocol and a better automatic protection against Premium services that miscount stored data volume. Such a protection is useful, as the JonDonym services are provided by different, independent organizations. Therefore, JonDo has to explicitly protect against attacks by these individual providers.

The program also contains many enhancements in details and error corrections.

What is JonDo?

JonDo is an open source and free-of-charge program for Windows, Linux and MacOS X. It hides the user's IP adress behind an anonymous IP address. In contrast to other anonymizers (VPNs, anonymous proxy servers), the user's anonymity stays protected even against the providers (operators) of the anonymous IP address.

Download: JonDo IP changer

JonDoFox 2.5.2: Supports SSL observatory of the EFF

Tuesday, June 21. 2011

Today, the JonDos GmbH publishes a new version of JonDoFox, a privacy-friendly web browser, that you may also use for anonymous surfing, e.g. over anonymous proxy servers.

What is JonDoFox?

JonDoFox is both a profile and an extension for the popular Mozilla Firefox web browser. It protects the user's privacy while surfing the web by removing identifying information from the browser. As it is open source software and free to use, it is an ideal add-on for anonymization services like JonDonym and Tor, but may also be used without anonymization software, just for safer surfing.

What is new?

This version of JonDoFox contains a default support for the SSL observatory initiative of the Electronic Frontier Foundation (EFF). When connected to the JonDonym anonymization service, JonDoFox will automatically send all SSL certificates received by public web sites to the EFF. JonDonym protects the users thereby from getting identified or getting their site accesses linked to each other. The EFF will use this data for a world-wide security monitoring of SSL certificates. Users of JonDonym may thereby help to make the web safer.

Moreover, JonDoFox is now fully compatible with the new Firefox 5. Users may therefore easily update to the new browser version.

Download: Anonymous surfing with JonDoFox

This is what your browser tells about you

Thursday, May 5. 2011

JonDos presents the free anonymity test „IP check“ for Tor, JonDonym, VPNs and anonymous proxy servers

Regensburg, 2011-05-05. Today, JonDos publishes „IP check“ - a free and easy understandable anonymity test. The test shows at a glance which attacks a website may launch on your privacy. Moreover, you get recommendations for possible counter measures.

The IP check explains which data your own web browser sends to websites. A website may use this data to create an individual profile of your computer. By misusing such a profile, you may later get identified reliably on this or on another website. For hiding your traces on the Internet, it is therefore not sufficient to use an anonymizer service like JonDonym or Tor alone.

What is the difference to the Panopticlick project? What is new?

Panopticlick is just a demonstration on how web browser data may be aggregated to profiles. In contrast, IP check analyzes thoroughly each chance to read data from the user's browser, and intentionally circumvents various security mechanisms. In case of proxy servers, web proxies or VPNs, the test may even uncover the real IP address in many cases. This knowledge helps web surfers who strive for anonymous surfing to close „data leaks“ in their browsers. If you are using the Tor or JonDonym anonymizer service, the IP check moreover shows you in detail whether the browser settings comply with the recommendations of the Tor project, or with the recommendations for JonDonym, respectively.

The test is constantly being enhanced for considering newly discovered privacy attacks. Besides the IP check, the site also contains a list with links to many recommendable websites about the topic. You may moreover include your own free IP check as image on your website.

URL:

IP check

JonDo 00.14.004: Better usability and speed

Friday, March 11. 2011

Today, JonDos publishes a new version of the JonDo-Software, an IP changer and IP anonymization program, that you can use for anonymous surfing in the Internet.

What is JonDo?
JonDo is an open source and free-of-charge program for Windows, Linux and MacOS X. It hides the user's IP adress behind an anonymous IP address. In contrast to other anonymizers (VPNs, anonymous proxy servers), the user's anonymity stays protected even against the providers of the anonymous IP address.

What's new?
JonDo now contains an assistant that should especially guide new users to a proper setup. It automatically identifies the reason of connection problems and configuration errors, and provides suitable solutions to the user. Guided by an ergonomics study, the user interface has been simplified. The controlling of JonDo was thereby made much more intuitive. Additionally, the anti censorship function has been enhanced and was made easier to access. The censorship circumvention included in JonDo helps people from countries where parts of the Internet are blocked to get free access to information. Moreover, the new version of JonDo is significantly faster in updating and processing network information and contains many enhancements in details and error corrections.

Download:
JonDo the IP changer

JonDoFox 2.5.0: Anonymous E-Mail post boxes and compatibility with Firefox 4

Thursday, February 24. 2011

Today, the JonDos GmbH publishes the new version of JonDoFox, a privacy-friendly web browser, that you may also use for anonymous surfing, e.g. over anonymous proxy servers.

What is JonDoFox?

JonDoFox is both a profile (current version: 2.5.0) and an extension (current version: 0.2.8 ) for the popular Mozilla Firefox web browser. It protects the user's privacy while surfing the web. As it is open source software and free to use, it is an ideal add-on for anonymization services like JonDonym and Tor, but may also be used without anonymization software.

What is new?

JonDoFox is now fully compatible with the upcoming Firefox 4. Users may therefore easily update to the new browser version once it is available. users of earlier versons of JonDoFox have to update to the new profile in oder to fully use JonDoFox with Firefox 4. In Firefox 4, it will moreover be possible again to create a history of visited web sites, as an effective protection against stealing the history has been integrated in the browser.

As a completely new feature, you may now use JonDoFox also to easily create an anonymous e-mail post box free of charge at one of numerous service providers: The randomly generated address will then be inserted automatically into the current web page, e.g. in order to use a contact form or to login to a forum. This provides the users with a better protection againts spam, and they may moreover now easily surf the web with differerent pseudonyms.

As a further improvement, JonDoFox now also sends the browser header DNT / Do-Not-Track: If web sites interpret this header, the users will be even better protected against the creation of surf profiles. Moreover, some usability enhancements and a new anonymous user agent header have been added.

The JonDoFox development team is happy to present you the new version of JonDoFox! Enjoy it!

Download:

http://anonymous-proxy-servers.net/en/jondofox.html