These are our current web browser recommendations and settings. We recommend keeping extensions to a minimum: they have privileged access within your browser, require you to trust the developer, can make you [stand out](https://en.wikipedia.org/wiki/Device_fingerprint#Browser_fingerprint), and [weaken](https://groups.google.com/a/chromium.org/g/chromium-extensions/c/0ei-UCHNm34/m/lDaXwQhzBAAJ) site isolation.
**Tor Browser** is the choice if you need anonymity. This browser provides you with access to the Tor Bridges and [Tor Network](https://en.wikipedia.org/wiki/Tor_(network)), along with extensions that can be automatically configured to fit its three security levels - *Standard*, *Safer* and *Safest*. We recommend that you do not change any of Tor Browser's default configurations outside of the standard security levels.
You should **never** install any additional extensions on Tor Browser, including the ones we suggest for Firefox. Browser extensions make you stand out from other people on the Tor network, and make your browser easier to [fingerprint](https://support.torproject.org/glossary/browser-fingerprinting).
**Firefox** provides strong privacy settings such as [Enhanced Tracking Protection](https://support.mozilla.org/kb/enhanced-tracking-protection-firefox-desktop), which can help block various [types of tracking](https://support.mozilla.org/kb/enhanced-tracking-protection-firefox-desktop#w_what-enhanced-tracking-protection-blocks).
Firefox includes a unique [download token](https://bugzilla.mozilla.org/show_bug.cgi?id=1677497#c0) in downloads from Mozilla's website and uses telemetry in Firefox to send the token. The token is **not** included in releases from the [Mozilla FTP](https://ftp.mozilla.org/pub/firefox/releases/).
Tor Browser is the only way to truly browse the internet anonymously. When you use Firefox we recommend changing the following settings to protect your privacy from certain parties, but all browsers other than Tor will be traceable by *somebody* in some regard or another.
This protects you by blocking social media trackers, fingerprinting scripts (note that this does not protect you from *all* fingerprinting), cryptominers, cross-site tracking cookies, and some other tracking content. ETP protects against many common threats, but it does not block all tracking avenues because it is designed to have minimal to no impact on site usability.
- [x] Check **Delete cookies and site data when Firefox is closed**
This protects you from persistent cookies, but does not protect you against cookies acquired during any one browsing session. When this is enabled, it becomes possible to easily cleanse your browser cookies by simply restarting Firefox. You can set exceptions on a per-site basis, if you wish to stay logged in to a particular site you visit often.
Search suggestions send everything you type in the address bar to the default search engine, regardless of whether you submit an actual search. Disabling search suggestions allows you to more precisely control what data you send to your search engine provider.
- [ ] Uncheck **Allow Firefox to send technical and interaction data to Mozilla**
- [ ] Uncheck **Allow Firefox to install and run studies**
- [ ] Uncheck **Allow Firefox to send backlogged crash reports on your behalf**
> Firefox sends data about your Firefox version and language; device operating system and hardware configuration; memory, basic information about crashes and errors; outcome of automated processes like updates, safebrowsing, and activation to us. When Firefox sends data to us, your IP address is temporarily collected as part of our server logs.
This prevents you from unintentionally connecting to a website in plain-text HTTP. Sites without HTTPS are uncommon nowadays, so this should have little to no impact on your day to day browsing.
[Firefox Sync](https://hacks.mozilla.org/2018/11/firefox-sync-privacy/) allows your browsing data (history, bookmarks, etc.) to be accessible on all your devices and protects it with E2EE.
We generally do not recommend installing any extensions as they increase your attack surface. However, if you want content blocking, [uBlock Origin](#additional-resources) might be useful to you. The extension is also a :trophy: [Recommended Extension](https://support.mozilla.org/kb/add-on-badges#w_recommended-extensions) by Mozilla.
The [Arkenfox project](https://github.com/arkenfox/user.js) provides a set of carefully considered options for Firefox. These options are quite strict but a few are subjective and may cause some websites to not work properly. You can easily change these settings to suit your needs. We **strongly recommend** reading through their [wiki](https://github.com/arkenfox/user.js/wiki). Arkenfox also enables [container](https://support.mozilla.org/en-US/kb/containers#w_for-advanced-users) support.
Firefox on Android is still less secure than Chromium-based alternatives: Mozilla's engine [GeckoView](https://mozilla.github.io/geckoview/) has yet to support [site isolation](https://hacks.mozilla.org/2021/05/introducing-firefox-new-site-isolation-security-architecture) or enable [isolatedProcess](https://bugzilla.mozilla.org/show_bug.cgi?id=1565196).
On iOS, any app that can browse the web is [restricted](https://developer.apple.com/app-store/review/guidelines) to using an Apple-provided [WebKit framework](https://developer.apple.com/documentation/webkit), so there is little reason to use a third-party web browser.
This prevents you from unintentionally connecting to a website in plain-text HTTP. The HTTP protocol is extremely uncommon nowadays, so this should have little to no impact on your day to day browsing.
**Safari** is the default browser in iOS. It includes [privacy features](https://support.apple.com/guide/iphone/browse-the-web-privately-iphb01fc3c85/15.0/ios/15.0) such as Intelligent Tracking Protection, Privacy Report, isolated Private Browsing tabs, iCloud Private Relay, and automatic HTTPS upgrades.
This enables WebKit's [Intelligent Tracking Protection](https://webkit.org/tracking-prevention/#intelligent-tracking-prevention-itp). The feature helps protect against unwanted tracking by using on-device machine learning to stop trackers. ITP protects against many common threats, but it does not block all tracking avenues because it is designed to not interfere with website usability.
Privacy Report provides a snapshot of cross-site trackers currently prevented from profiling you on the website you're visiting. It can also display a weekly report to show which trackers have been blocked over time.
- [ ] Uncheck **Privacy Preserving Ad Measurement**
Ad click measurement has traditionally used tracking technology that infringes on user privacy. [Private Click Measurement](https://webkit.org/blog/11529/introducing-private-click-measurement-pcm/) is a WebKit feature and proposed web standard aimed towards allowing advertisers to measure the effectiveness of web campaigns without compromising on user privacy.
The feature has little privacy concerns on its own, so while you can choose to leave it on, we consider the fact that it's automatically disabled in Private Browsing to be an indicator for disabling the feature.
While synchronization of Safari History, Tab Groups, and iCloud Tabs uses E2EE, bookmarks sync does [not](https://support.apple.com/en-us/HT202303); they are only encrypted in transit and stored in an encrypted format on Apple's servers. Apple may be able to decrypt and access them.
If you use iCloud, we also recommend checking to ensure Safari's default download location is set to locally on your device. This option can be found in :gear: **Settings** → **Safari** → **General** → **Downloads**.
We generally do not recommend installing [any extensions](https://www.sentinelone.com/blog/inside-safari-extensions-malware-golden-key-user-data/) as they increase your browser's attack surface; however, if you want content blocking, [AdGuard for Safari](#additional-resources) might be useful to you.
**uBlock Origin** is a popular content blocker that could help you block ads, trackers, and fingerprinting scripts.
We suggest enabling all of the [filter lists](https://github.com/gorhill/uBlock/wiki/Dashboard:-Filter-lists) under the "Ads," "Privacy," and "Malware domains". The "Annoyances" and "Multipurpose" lists can also be enabled, but they may break some social media functions. The *AdGuard URL Tracking Protection* filter list makes extensions like CleanURLs and NeatURLs redundant.
We also suggest adding the [Actually Legitimate URL Shortener Tool](https://raw.githubusercontent.com/DandelionSprout/adfilt/master/LegitimateURLShortener.txt) list and any of the regional lists that might apply to your browsing habits. To add this list, first access settings by clicking on the uBO icon, then the settings icon ( :gear: ). Go to the bottom of the Filter lists pane and place a checkmark next to Import under the Custom section. Paste the URL of the filter list above into the text area that appears below and click "Apply changes".
uBlock Origin also has different [blocking modes](https://github.com/gorhill/uBlock/wiki/Blocking-mode). The easy mode [might not](https://www.ranum.com/security/computer_security/editorials/dumb/) necessarily keep you safe from every tracker out there, whereas the more advanced modes let you control exactly what needs to run.
**AdGuard for Safari** is a free and open-source content-blocking extension for Safari that uses the native [Content Blocker API](https://developer.apple.com/documentation/safariservices/creating_a_content_blocker).
We suggest enabling the filters labled *#recommended* under the "Ad Blocking" and "Privacy" [content blockers](https://kb.adguard.com/en/safari/overview#content-blockers). The *#recommended* filters can also be enabled for the "Social Widgets" and "Annoyances" content blockers, but they may break some social media functions.
There is also [AdGuard for iOS](https://adguard.com/en/adguard-ios/overview.html) which is able to perform system-wide content blocking by means of DNS filtering.
**Snowflake** is a browser extension which allows you to donate bandwidth to the Tor Project by operating a "Snowflake proxy" within your browser. People who are censored can use Snowflake proxies to connect to the Tor network. Installing this extension is a great way to contribute to the network even if you don't have the technical know-how to run a Tor relay or bridge.
The Snowflake browser extension does not increase your privacy in any way, nor is it used to connect to the Tor network within your personal browser. However, if your internet connection is uncensored, you should consider running it to help people in censored networks achieve better privacy themselves. There is no need to worry about which websites people are accessing through your proxy. Their visible browsing IP address will match their Tor exit node, not yours.
Running a Snowflake proxy is low-risk, even moreso than running a Tor relay or bridge which are already not particularly risky endeavours. However, it does still proxy traffic through your network which can be impactful in some ways, especially if your network is bandwidth-limited. Make sure you understand [how Snowflake works](https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/wikis/home) before deciding whether to run a proxy.
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