JonDoFox sources

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The source of the documentation may be found [ here], a compiled .pdf may be found [ here] (currently only an old german version).
The source of the documentation may be found [ here], a compiled .pdf may be found [ here] (currently only an old german version).
==JonDoFox' Defenses==
* HTTP-Header
** spoofing of User Agent (general.appname.override, general.appversion.override, general.buildID.override, general.oscpu.override, general.platform.override, general.productSub.override, general.useragent.override, general.useragent.vendor, general.useragent.vendorSub)
** spoofing of Referer
** further header spoofing (intl.accept_languages, intl.charset.default, network.http.accept.default)
* Further preferences
** browser.pagethumbnails.capturing_disabled set to true
** set to false
** browser.zoom.siteSpecific set to false
** plugin.expose_full_path set to false
** browser.send_pings set to false
** set to false
** set to false
** geo.enabled set to false
** network.prefetch-next set to false
** network.proxy.socks_remote_dns set to true
** network.http.proxy.keep-alive set to false
** view_source.editor.external set to false
** security.remember_cert_checkbox_default_setting set to false
** security.default_personal_cert set to "Ask Every Time"
** privacy.sanitize.sanitizeOnShutdown set to true
** privacy.clearOnShutdown.history set to false
** privacy.clearOnShutdown.offlineApps set to true
** network.cookie.cookieBehavior set to 2
** set to true
** network.protocol-handler.warn-external.snews set to true
** network.protocol-handler.warn-external.nntp set to true
** network.protocol-handler.warn-external.file set to true
** network.protocol-handler.warn-external.mailto set to true
** network.protocol-handler.warn-external-default set to true
** browser.history_expire_days set to 0
** network.http.accept-encoding set to "gzip,deflate" (FF4 and higher)
** privacy.donottrackheader.enabled set to true (FF4 and higher)
** extensions.getAddons.cache.enabled set to false (FF4 and higher)
** dom.indexedDB.enabled set to false (FF4 and higher)
** webgl.disabled set to true (FF4 and higher)
** browser.display.use_document_fonts set to 0
** browser.sessionhistory.max_entries set to 2 (FF4 and higher)
** browser.safebrowsing.* => set relevant safebrowsing peferences to values that do neither leak the deployed language nor the FF version to Google (see the preferences.js in the JonDoFox.xpi for the currently used values)
** security.enable_tls_session_tickets set to false to avoid fingerprinting via TLS Session Resumption
** dom.battery.enabled set to false to avoid leaking some fingerprintable information in some corner cases
** dom.performance_enable set to false (FF7 and higher) in order to avoid fingerprinting a user deploying detailed page load statistics (although this threat is somewhat mitigated by having an anonymization service between the user and the attacker)
** network.http.spdy.enabled set to false
** set to false
** extensions.blocklist.enabled set to false
** media.peerconnection.enabled set to false
*Cookies, DOM storage and IndexedDB
** cookies currently blocked per default via Cookie Monster {planned an own user friendly tabspecific CM}
** DOM storage currently disabled per preference {planned to expand the CM to the handling of DOM storage}
** The IndexedDB feature is disabled per preference at the moment {planned to expand the CM to the handling of the IndexedDB feature}
** modified SafeCache code {planned to expand the tabspecific design mentioned above to handle cache cases as well}
** included first defense against HTTP-Auth tracking (see: []) {planned to use the same partitioning methods as SafeCache and the Referer-spoofing in the mid-run; tabspecific separation in the long run}
*Browser History
** currently disabled per preference (FF3.x)
** currently disabled per preference until we investigated whether they pose an additional threat (and if so, how to mitigate that)
*MIME types
** in almost all cases we avoid that an external application is launched automatically to open a specific file
** we show a warning dialog (hooking us into the external app or NoScript dialog (the latter if the user has a pdf plugin activated))
** we prohibit that the user may set the "Always open with this application" option {there needs still a little bit done in this regard to make that bulletproof}
*Search queries
** delete the search queries after user launched search request
** after half an hour will the search history be deleted
** we disabled search suggestions per preference
*SSL based attacks
** included a modified version of Certificate Patrol (CP) {planned to enhance that a bit further (a kind of get-me-out-of-here button...)}
** disabled attacks using client certificates per preference
** included EFF's distributed SSL Observatory feature to be able to secure the SSL infrastructure in the future
** disabled SSL 3.0 per preference
*Media queries
** currently no way to cope with that as that needs probably a patched Firefox
** NoScript
** {we plan to implement a nsIContentPolicy that would take care of it e.g. if NoScript is disabled}
*JS based attacks
** NoScript in profile included
** tracking users via is disabled
** {planned to spoof the browser locale reliably}
** NoScript in profile included
** all plugins are disabled in JonDoFox but Flash by default; the latter get disabled additionally by setting a hidden preference, extensions.jondofox.disableAllPluginsJonDoMode, to "true"
*AdBlock based attack
**{planned to implement one ad blocking list shipped with JonDoFox to minimize the risk that users get profiled by using different ad filter lists}

Revision as of 10:14, 23 October 2013

En2.png De2.png  Changelogs and Sources

How to get the sources and build a jondofox.xpi

It is probably the best to create a JonDoFox directory first and change to it:

mkdir JonDoFox && cd JonDoFox

Now you need a subversion client and check out the source as follows:

svn checkout

If your svn client complains about our self-signed certificate you may compare the SHA1 fingerprints to make sure you download our sources. The SHA1-fingerprint of our certificate is:


Afterwards change the directory to trunk and run the appropriate shellscript:

cd trunk && ./

Now you'll find the freshly built jondofox.xpi in the directory xpi.

JonDoFox Documentation

The source of the documentation may be found here, a compiled .pdf may be found here (currently only an old german version).

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