rukov Posted December 9, 2014 Report Posted December 9, 2014 RAS is a privacy enhancing firefox addon which aims to hinder browser fingerprinting. It does this by changing the browser/device profile on a timer. Each browser profile has been tailored to match the actual values used by the target browser as much as possible, within the limits set by firefox.It also supports other privacy enhancing optionsFeaturesAllows the user to choose a browser profile at random (From all available profiles or desktop profiles only)Allows the user to specify the interval at which the random profiles are chosen. Interval can also be random, a specific time period or per session if not setAllows the user to exclude profiles from random selection.Persistently remembers the users choice of user agent and time interval if set.Provides a quick toggle to enable/disable the addon via right clicking the icon as well as a checkbox in the UI.Provides option to toggle notifications of user agent changes.Allows vendor spoofing that was removed in firefox 24Sets other privacy attributes such as buildid, oscpu and platform where the values are known.It has a left click menu of expandable lists to allow users to quickly choose specific profilesIt has a large list of profiles (nearly 400 at this time).Option to limit local dom storageOption to disable browser cacheOption to limit fonts to a standard set (monospace, serif, times new roman)Option to limit tab history to twoOption to disable geolocation supportOption to disable dns prefetchingOption to disable link prefetchingOption to disable webglOption to disable webRTCOption to disable canvas element supportOption to set referer headerOption to set do not track headerOptions to send spoofed headers including via, x-forwarded-for and if-none-match.Options to spoof the accept headers: documents, encoding and language (US English) so they match the spoofed profile.Option to override timezone offset to a random timezone, send nothing, specify one from a list or use the default one.Option to spoof screen and window sizes to a specific size or set at randomDownload https://addons.mozilla.org/en-US/firefox/addon/random-agent-spoofer/ Quote