Change Firefox Preferences
To open the Firefox Preferences menu, open menu (top-right of browser window) and click “Preferences.” Alternatively, enter about:preferences
into the address bar and hit enter.
Remove Pocket from your home page
Under Home > Firefox Home Content, UNCHECK Recommended by Pocket
Change your default search engine
DuckDuckGo as an alternative to Google, as it respects your privacy and doesn’t track you.
If you’d like to use DuckDuckGo as your primary search engine, simply go to Search > Default search engine and change it to DuckDuckGo.
Enable Tracking Protection
Under Privacy & Security > Enhanced Tracking Protection, select Custom. CHECK all options and select All third-party cookies under Cookies. This may cause a small number of websites to break, but it’s worth it for security and privacy.
If you encounter a website that doesn’t function without third-party cookies (such as Microsoft Teams and Pearson MyLab), you may temporarily disable Firefox’s Tracking Protection for that website. To do this, click on the Shield icon on the left of the address bar, and toggle off Enhanced Tracking Protection for this site.
Disable Password Saving
On the same page, under Logins and Passwords, UNCHECK Ask to save logins and passwords for websites. It’s usually not a good idea to save passwords in your browser. You should use a password manager instead. For most people, use Bitwarden.
Decline location access
On the same page, in Location Settings…, CHECK Block new requests asking to access your location. This denies geolocation permission prompts by default, but the geolocation capability is retained.
Disallow notifications
On the same page, in Notification Settings…, CHECK Block new requests asking to allow notifications. This denies notification permission prompts by default, but the web notification capability is retained.
Disallow autoplay
On the same page, in Autoplay Settings…, set “Default for all websites” to Block Audio and Video for. This prevents audio/video from automatically playing.
Disable telemetry and error reporting
On the same page, UNCHECK EVERYTHING under Firefox Data Collection and Use.
Enable HTTPS-Only Mode
On the same page, under HTTPS-Only Mode, select Enable HTTPS-Only Mode in all windows.
HTTPS provides encrypted communication between your browser and websites, and you should always use HTTPS when available. With HTTPS-Only Mode enabled, Firefox will upgrade all connections to HTTPS, and you’ll see a warning when a website doesn’t support HTTPS.
Dive into advanced settings
To access these advanced settings, enter about:config
into the address bar and hit enter. When you see a warning screen, click I accept the risk to continue.
All configuration items are in alphabetical order, and easily searchable using the search bar on the top of the page. In this section, configuration items are highlighted
, and their values are in bold.
Double-click on a configuration item to modify it. If the item is a boolean, double-clicking it will change it from true to false, or vice versa. If the item is an integer or a string, double-clicking it will open a pop-up box to edit the value.
Disable telemetry
Making these changes disables Firefox telemetry:
- Change
browser.newtabpage.activity-stream.feeds.telemetry
to false - Change
browser.ping-centre.telemetry
to false - Change
browser.tabs.crashReporting.sendReport
to false - Change
devtools.onboarding.telemetry.logged
to false - Change
toolkit.telemetry.enabled
to false - Delete the URL for
toolkit.telemetry.server
, and leave it empty - Change
toolkit.telemetry.unified
to false
Disable Pocket
If you don’t use Pocket, or you don’t want Firefox’s Pocket integration, make the following changes:
- Change
browser.newtabpage.activity-stream.feeds.discoverystreamfeed
to false - Change
browser.newtabpage.activity-stream.feeds.section.topstories
to false - Change
browser.newtabpage.activity-stream.section.highlights.includePocket
to false - Change
browser.newtabpage.activity-stream.showSponsored
to false - Change
extensions.pocket.enabled
to false
Disable prefetching
Even though prefetching may speed things up a bit, it may connect to servers without user intervention (which can be a privacy issue) and its performance benefits are minimal. Making these changes will disable prefetching:
- Change
network.dns.disablePrefetch
to true - Change
network.prefetch-next
to false
Disable JavaScript in PDF
Firefox 88 introduced the ability to execute JavaScript in PDF documents. While there are legitimate uses for JavaScript in PDF (such as form validation), such uses are not very common. In addition, it could be used for malicious purposes, so it’s generally a good idea to disable this feature.
To disable JavaScript support in PDF documents, change pdfjs.enableScripting
to false.
Harden SSL preferences
Making these changes will disable insecure SSL ciphers and force safe negotiation:
- Change
security.ssl3.rsa_des_ede3_sha
to false - Change
security.ssl.require_safe_negotiation
to true
Note:
If you can’t findsecurity.ssl3.rsa_des_ede3_sha
, please ignore it. This option do not exist in the latest versions of Firefox, as support for these insecure ciphers has been removed.
A small number of sites (ones with legacy and potentially less secure SSL/TLS configurations) might no longer work after changing this option. If you find this to be an issue, leavesecurity.ssl.require_safe_negotiation
as default (false) and setsecurity.ssl.treat_unsafe_negotiation_as_broken
to true.
Disable Firefox account features
If you don’t want to sync your browser data with a Firefox account, you can simply use Firefox without signing in.
For those who want to completely disable this feature, change identity.fxaccounts.enabled
to false.
Disable geolocation support
This prevents websites from accessing your location information. Change geo.enabled
to false.
If you do not want to disable geolocation capabilities altogether, you may skip this step.
Disable notification support
Web notifications are often not useful and many find it annoying. To disable it completely, change dom.webnotifications.enabled
to false.
If you do not want to disable notifications capabilities altogether, you may skip this step.
Disable WebRTC
WebRTC can potentially expose your real IP address, changing the following disables it:
- Change
media.peerconnection.enabled
to false - Change
media.navigator.enabled
to false
Note: This will break any site that uses real-time audio/video communication, which includes almost all real-time chat and conferencing apps.
Disable WebGL
WebGL is used for some graphical web apps and online games, but it’s also a security risk and can potentially be used for fingerprinting. Disable it by changing webgl.disabled
to true.
Note: This will break any site that uses WebGL for graphics, which includes most modern online games and complex graphical sites.
Strip URLs
privacy.query_stripping.enabled
to trueprivacy.query_stripping.enabled.pbmode
to true
Resist browser fingerprinting
This feature can decrease advertisers’ and online trackers’ ability to identify you. Change privacy.resistFingerprinting
to true.
Note: Based on my experience, enabling this can lead to noticeable performance and stability impacts. Please proceed with caution.
Disable referrer headers
Referrers tell websites how you came to their sites, which can be used to track you. To prevent referrer headers from being sent, change network.http.sendRefererHeader
to 0.
Note: Many websites, especially ones with forms and logins, depend on referrers for security and spam protection. If you don’t send the referrer header, these sites will break.
Change cookie behaviors
Websites often store a small amount of information, called “cookies,” to store information (such as remembering login status and preferences) and track you.
Isolating cookies cookies and other stored information to the first party domain prevents cross-site tracking. To enable this feature, change privacy.firstparty.isolate
to true.
Note: Firefox 86 introduced Total Cookie Protection, which stores each website’s cookies in their own “cookie jar.” This may conflict with
privacy.firstparty.isolate
.
If you don’t want websites to store any cookies at all, change network.cookie.lifetimePolicy
to 2. Firefox will automatically delete cookies at the end of browsing sessions.
Note: Doing this will sign you out of many websites when you close Firefox, and websites will not be able to store any data on your device.
Install some add-ons
Must-haves
These add-ons require minimal configuration and can dramatically improve the security and privacy in Firefox. I recommend everyone install these extensions.
uBlock Origin https://addons.mozilla.org/en-US/firefox/addon/ublock-origin/
The most powerful open-source ad blocker, period. It can block ads, trackers, malwares, annoyances, and more. It also significantly improves page load speed.
If you want to customize it, https://github.com/gorhill/uBlock/wiki
Decentraleyes https://addons.mozilla.org/en-US/firefox/addon/decentraleyes/
Decentraleyes prevents you against tracking though “free” CDN providers by serving common static files (such as the ones from Google Hosted Libraries) from your local device.
After you install it, you can just forget about it.
A password manager
If you already have a password manager, just install the add-on for it.
If you don’t use a password manager, you really should consider using one. I recommend Bitwarden, which is 100% open source and very easy to use.
Recommended
These add-ons are recommended for most users, but they require some configuration and maintenance.
Cookie AutoDelete https://addons.mozilla.org/en-US/firefox/addon/cookie-autodelete/
This extension automatically deletes cookies and site data from closed tabs, which prevents most websites from tracking you with cookies. If you set Firefox to delete all cookies and site data on exit, you might not need this.
After installing, open its settings page from its toolbar icon. Once you’re in there, check the box for Enable Automatic Cleaning and Enable Cleanup on Domain Change. Then, go to List of Expressions, and whitelist all websites that you wish to keep cookies for, including websites you want to stay logged in to and save preferences. In most cases, whitelisting the websites’ domain (without www
) will do, but some websites have cookies associated with multiple domains, including:
- Microsoft: whitelist
login.live.com
for personal accounts; whitelistlogin.microsoftonline.com
for work/school accounts - Google: whitelist
google.com
andaccounts.google.com
- ProtonMail: whitelist
*.protonmail.com
and check “Keep LocalStorage” - Tutanota: whitelist
mail.tutanota.com
and check “Keep LocalStorage”
Privacy Settings
Privacy Settings creates a toolbar panel to alter Firefox’s built-in privacy settings. Sometimes, you may have to disable some privacy protection for websites to function properly. When you finish using those websites, re-enable the privacy settings you just disabled for maximum privacy protection.
After installing, don’t change any settings with it yet. Here are a few cases you might want to change your privacy settings:
- Enable
network.peerConnectionEnabled
to use real-time audio/video communication (Zoom, WebEx, Discord, etc.). - Many web forms will not work when the browser isn’t sending referrers. Enable
websites.referrersEnabled
temporarily to send referrers.
https://addons.mozilla.org/en-US/firefox/addon/privacy-settings/
Backup Firefox profile
Before changing the configuration, you should make a backup of the default profile, or create a new profile to be used with the new settings.
To back up your profile, first close Firefox if it is open and then copy the default profile folder to another location, for example on Linux the profile folder is:
~/.mozilla/firefox/xxxxxxxx.default
when “xxxxxxxx” is the ID of your profile.
See: Back up and restore information in Firefox profiles https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles
Create, remove or switch Firefox profiles https://support.mozilla.org/en-US/kb/profile-manager-create-remove-switch-firefox-profiles?redirectslug=profile-manager-create-and-remove-firefox-profiles&redirectlocale=en-US
Firefox Preferences
Search Preferences
- Go to
Search
:Default Search Engine
: selectDuckDuckGo
Search Shortcuts
: selectDuckDuckGo
, remove Google, Bing, eBay, Amazon, Wikipedia search engines
about:config
The parameters are divided into “Sections” and are indicated with the format option = value
for the sake of clarity. You can use the file user.js to set all the parameters automatically at Firefox startup.
On the search bar digit: about:config
and set the parameters as follows:
StartUp Settings
- Disable about:config warning:
browser.aboutConfig.showWarning = false
- Set startup home page:
- 0 = blank
- 1 = home
- 2 = last visited page
- 3 = resume previous session
browser.startup.page = 1
browser.startup.homepage = "about:home"
- Disable Activity Stream on new windows and tab pages:
browser.newtabpage.enabled = false
browser.newtab.preload = false
browser.newtabpage.activity-stream.feeds.telemetry = false
browser.newtabpage.activity-stream.telemetry = false
browser.newtabpage.activity-stream.feeds.snippets = false
browser.newtabpage.activity-stream.feeds.section.topstories = false
browser.newtabpage.activity-stream.section.highlights.includePocket = false
browser.newtabpage.activity-stream.showSponsored = false
browser.newtabpage.activity-stream.feeds.discoverystreamfeed = false
browser.newtabpage.activity-stream.showSponsoredTopSites = false
browser.newtabpage.activity-stream.default.sites = ""
Geolocation
- Use Mozilla geolocation service instead of Google if permission is granted:
geo.provider.network.url = "https://location.services.mozilla.com/v1/geolocate?key=%MOZILLA_API_KEY%"
- Disable using the OS’s geolocation service:
geo.provider.ms-windows-location = false
[Windows]geo.provider.use_corelocation = false
[macOS]geo.provider.use_gpsd = false
[Linux] - Disable region updates:
browser.region.network.url = ""
browser.region.update.enabled = false
Language / Locale
- Set language for displaying web pages:
intl.accept_languages = "en-US, en"
javascript.use_us_english_locale = true
[Hidden pref]
Auto-updates / Recommendations
- Disable auto-installing Firefox updates:
app.update.background.scheduling.enabled = false
[Windows]app.update.auto = false
[Non-Windows] - Disable addons recommendations (uses Google Analytics):
extensions.getAddons.showPane = false
[Hidden pref]extensions.htmlaboutaddons.recommendations.enabled = false
Telemetry
- Disable telemetry:
datareporting.policy.dataSubmissionEnabled = false
datareporting.healthreport.uploadEnabled = false
toolkit.telemetry.enabled = false
[Default: false]toolkit.telemetry.unified = false
toolkit.telemetry.server = "data:,"
toolkit.telemetry.archive.enabled = false
toolkit.telemetry.newProfilePing.enabled = false
toolkit.telemetry.shutdownPingSender.enabled = false
toolkit.telemetry.updatePing.enabled = false
toolkit.telemetry.bhrPing.enabled = false
toolkit.telemetry.firstShutdownPing.enabled = false
toolkit.telemetry.coverage.opt-out = true
[Hidden pref]toolkit.coverage.opt-out = true
[Hidden pref]toolkit.coverage.endpoint.base = ""
browser.ping-centre.telemetry = false
beacon.enabled = false
Studies
- Disable studies:
app.shield.optoutstudies.enabled = false
- Disable Normandy/Shield:
app.normandy.enabled = false
app.normandy.api_url = ""
Crash Reports
- Disable crash reports:
breakpad.reportURL = ""
browser.tabs.crashReporting.sendReport = false
Captive Portal Detection / Network Checks
- Disable captive portal detection:
captivedetect.canonicalURL = ""
network.captive-portal-service.enabled = false
- Disable network connections checks:
network.connectivity-service.enabled = false
Safe Browsing
- Disable safe browsing service:
browser.safebrowsing.malware.enabled = false
browser.safebrowsing.phishing.enabled = false
- Disable list of blocked URI:
browser.safebrowsing.blockedURIs.enabled = false
- Disable fetch of updates:
browser.safebrowsing.provider.google4.gethashURL = ""
browser.safebrowsing.provider.google4.updateURL = ""
browser.safebrowsing.provider.google.gethashURL = ""
browser.safebrowsing.provider.google.updateURL = ""
- Disable checks for downloads:
browser.safebrowsing.downloads.enabled = false
browser.safebrowsing.downloads.remote.enabled = false
browser.safebrowsing.downloads.remote.url = ""
- Disable checks for unwanted software:
browser.safebrowsing.downloads.remote.block_potentially_unwanted = false
browser.safebrowsing.downloads.remote.block_uncommon = false
- Disable bypasses the block of safe browsing with a click for current session:
browser.safebrowsing.allowOverride = false
Network: DNS, Proxy, IPv6
- Disable link prefetching:
network.prefetch-next = false
- Disable DNS prefetching:
network.dns.disablePrefetch = true
- Disable predictor:
network.predictor.enabled = false
- Disable link-mouseover opening connection to linked server:
network.http.speculative-parallel-limit = 0
- Disable mousedown speculative connections on bookmarks and history:
browser.places.speculativeConnect.enabled = false
- Disable IPv6:
network.dns.disableIPv6 = true
- Disable GIO protocols as a potential proxy bypass vectors:
network.gio.supported-protocols = ""
[Hidden pref] - Remove special permissions for certain mozilla domains:
permissions.manager.defaultsUrl = ""
- Use Punycode in Internationalized Domain Names to eliminate possible spoofing:
network.IDN_show_punycode = true
Search Bar: Suggestions, Autofill
- Disable search suggestions:
browser.search.suggest.enabled = false
browser.urlbar.suggest.searches = false
- Disable location bar domain guessing:
browser.fixup.alternate.enabled = false
- Display all parts of the url in the bar:
browser.urlbar.trimURLs = false
- Disable location bar making speculative connections:
browser.urlbar.speculativeConnect.enabled = false
- Disable form autofill:
browser.formfill.enable = false
extensions.formautofill.addresses.enabled = false
extensions.formautofill.available = "off"
extensions.formautofill.creditCards.available = false
extensions.formautofill.creditCards.enabled = false
extensions.formautofill.heuristics.enabled = false
- Disable location bar contextual suggestions:
browser.urlbar.quicksuggest.scenario = "history"
browser.urlbar.quicksuggest.enabled = false
browser.urlbar.suggest.quicksuggest.nonsponsored = false
browser.urlbar.suggest.quicksuggest.sponsored = false
Passwords
- Disable saving passwords:
signon.rememberSignons = false
- Disable autofill login and passwords:
signon.autofillForms = false
- Disable formless login capture for Password Manager:
signon.formlessCapture.enabled = false
- Hardens against potential credentials phishing:
- 0 = don’t allow sub-resources to open HTTP authentication credentials dialogs
- 1 = don’t allow cross-origin sub-resources to open HTTP authentication credentials dialogs
- 2 = allow sub-resources to open HTTP authentication credentials dialogs (default)
network.auth.subresource-http-auth-allow = 1
Disk Cache / Memory
- Disable disk cache:
browser.cache.disk.enable = false
- Disable storing extra session data:
- 0 = everywhere
- 1 = unencrypted sites
- 2 = nowhere
browser.sessionstore.privacy_level = 2
- Disable resuming session from crash:
browser.sessionstore.resume_from_crash = false
- Disable page thumbnail collection
browser.pagethumbnails.capturing_disabled = true
[Hidden pref]
HTTPS / SSL/TLS / OSCP / CERTS
- Enable HTTPS-Only mode in all windows:
dom.security.https_only_mode = true
- Disable sending HTTP request for checking HTTPS support by the server:
dom.security.https_only_mode_send_http_background_request = false
- Display advanced information on Insecure Connection warning pages:
browser.xul.error_pages.expert_bad_cert = true
- Disable TLS1.3 0-RTT (round-trip time):
security.tls.enable_0rtt_data = false
- Set OCSP to terminate the connection when a CA isn’t validate:
security.OCSP.require = true
- Disable SHA-1 certificates:
security.pki.sha1_enforcement_level = 1
- Enable strict pinning (PKP (Public Key Pinning)):
- 0 = disabled
- 1 = allow user MiTM (i.e. your Antivirus)
- 2 = strict
security.cert_pinning.enforcement_level = 2
- Enable CRLite
- 0 = disabled
- 1 = consult CRLite but only collect telemetry (default)
- 2 = consult CRLite and enforce both “Revoked” and “Not Revoked” results
- 3 = consult CRLite and enforce “Not Revoked” results, but defer to OCSP for “Revoked”
security.remote_settings.crlite_filters.enabled = true
security.pki.crlite_mode = 2
Headers / Referers
- Control when to send a referer:
- 0 = always (default)
- 1 = only if base domains match
- 2 = only if hosts match
network.http.referer.XOriginPolicy = 2
- Control the amount of information to send:
- 0 = send full URI (default): https://example.com:8888/foo/bar.html?id=1234
- 1 = scheme+host+port+path: https://example.com:8888/foo/bar.html
- 2 = scheme+host+port: https://example.com:8888
network.http.referer.XOriginTrimmingPolicy = 2
Audio/Video: WebRTC, WebGL, DRM
- Disable WebRTC:
media.peerconnection.enabled = false
- Force WebRTC inside the proxy:
media.peerconnection.ice.proxy_only_if_behind_proxy = true
- Force a single network interface for ICE candidates generation:
media.peerconnection.ice.default_address_only = true
- Force exclusion of private IPs from ICE candidates:
media.peerconnection.ice.no_host = true
- Disable WebGL (Web Graphics Library):
webgl.disabled = true
- Disable autoplay of HTML5 media:
- 0 = allow all
- 1 = block non-muted media (default)
- 5 = block all
media.autoplay.default = 5
Downloads
- Always ask you where to save files:
browser.download.useDownloadDir = false
- Disable adding downloads to system’s “recent documents” list:
browser.download.manager.addToRecentDocs = false
Cookies
- Enable ETP (Enhanced Tracking Protection), ETP strict mode enables Total Cookie Protection (TCP):
browser.contentblocking.category = "strict"
- Enable state partitioning of service workers:
privacy.partition.serviceWorkers = true
UI Features
- Block popup windows:
dom.disable_open_during_load = true
- Disable Pocket extension:
extensions.pocket.enabled = false
- Disable Screenshots extension:
extensions.Screenshots.disabled = true
- Disable PDJFS scripting:
pdfjs.enableScripting = false
Shutdown Settings
- Clear history, cookies and site data when Firefox closes:
network.cookie.lifetimePolicy = 2
privacy.sanitize.sanitizeOnShutdown = true
privacy.clearOnShutdown.cache = true
privacy.clearOnShutdown.cookies = true
privacy.clearOnShutdown.downloads = true
privacy.clearOnShutdown.formdata = true
privacy.clearOnShutdown.history = true
privacy.clearOnShutdown.offlineApps = true
privacy.clearOnShutdown.sessions = true
privacy.clearOnShutdown.sitesettings = false
privacy.sanitize.timeSpan = 0
Fingerprinting (RFP)
- Enable RFP:
privacy.resistFingerprinting = true
- Set new window size rounding max values:
privacy.window.maxInnerWidth = 1600
privacy.window.maxInnerHeight = 900
- Disable mozAddonManager Web API:
privacy.resistFingerprinting.block_mozAddonManager = true
[Hidden pref] - Disable using system colors:
browser.display.use_system_colors = false
[Default: false [Non-Windows]] - Disable showing about:blank page when possible at startup
browser.startup.blankWindow = false
- Disable using system colors:
browser.display.use_system_colors = false
[Default: false [Non-Windows]]
user.js
If you want (is recommended), you can use the user.js
file with the settings of this guide or with your preferred settings, it is recommended to create a new profile for this purpose. Before using the file check the entries and modify/add them according to your preferences, don’t copy/paste without know what you are doing.
Download the user.js
template from my GitHub gist, note that this user.js is configured for Linux systems, so if you use Windows or macOS edit, comment/uncomment the relevant entries according to the instructions listed above.
More information about Firefox user.js:
- mozillaZine – User.js file https://kb.mozillazine.org/User.js_file
- arkenfox/user.js – Wiki https://github.com/arkenfox/user.js/wiki/1.1-Overview
uBlock Origin
uBlock Origin https://addons.mozilla.org/en-US/firefox/addon/ublock-origin/
- Install
uBlock Origin
:Click onAdd to Firefox
- Open the plugin settings:Click the icon to the right of the search bar then select
Open the dashboard
- Enable additional blocklists:In the dashboard select
Filter lists
, this is my lists selection (you can select your favorite ones):
uBlock Origin blocklists:
* Built-in:
* uBlock filters & uBlock filters – Privacy
* Ads:
* EasyList
* Privacy:
* AdGuard URL Tracking Protection
* EasyPrivacy
* Malware Domains:
* Online Malicious URL Blocklist
* Phishing URL Blocklist
* Annoyances:
* Anti-Facebook
* Adguard Social Media
* Easylist Cookie
* Regional:
* Your country Adguard list
* Local:
* Peter Lowe's Ad and tracking server list
For more information about uBlock usage see the Wiki https://github.com/gorhill/uBlock/wiki on GitHub, check the Blocking mode: Medium mode https://github.com/gorhill/uBlock/wiki/Blocking-mode:-medium-mode, is very powerful :).
DoH (DNS over HTTPS)
DNS-over-HTTPS, DNS-over-TLS, and DNSCrypt resolvers will not make you anonymous. Using Anonymized DNSCrypt hides only your DNS traffic from your Internet Service Provider. However, using any of these protocols will prevent DNS hijacking, and make your DNS requests harder for third parties to eavesdrop on and tamper with. For more information about DNS and DoH see: Wikipedia – DNS over HTTPS https://en.wikipedia.org/wiki/DNS_over_HTTPS
If you want to set DoH on Firefox:
Go to Edit -> Settings -> General -> Network Settings
, click on Settings
, select Enable DNS over HTTPS
, in Use Provider
window, select Custom
and insert your DoH provider.
Multiple profiles and Containers
A good practice is to use multiple profiles for different purposes, e.g. (work, streaming, personal, finance), read https://support.mozilla.org/en-US/kb/profile-manager-create-remove-switch-firefox-profiles?redirectslug=profile-manager-create-and-remove-firefox-profiles&redirectlocale=en-US how to manage profiles in Firefox.
In the latest versions of Firefox you can create Containers https://support.mozilla.org/en-US/kb/containers, Firefox Multi-Account Containers lets you keep parts of your online life separated into color-coded tabs that preserve your privacy. Cookies are separated by container, allowing you to use the web with multiple identities or accounts simultaneously.
Browser Leak Tests
There are come resources where you can test your browser to see how unique it is:
- https://coveryourtracks.eff.org/
- https://www.privacyguides.org/basics/threat-modeling/
- https://www.amiunique.org/
- https://browserleaks.com/
- https://arkenfox.github.io/TZP/tzp.html