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Privacy issues in webbrowsers on Android
Overview
Browser | Version | Date | Auto restart1) | (Initial) Connections2) | Remark |
---|---|---|---|---|---|
Brave | 1.46.146 | Y3) | Amazon, Google, Adobe (Cloudfront) | ||
Chrome | Y | ||||
DuckDuckGo | 5.145.4 | N | 52.142.125.222 (Microsoft Corporation) | Annoying user approach | |
Firefox | 108.1.1 | Y | Amazon, Google and Adobe (Cloudfront) | ||
Firefox Focus | 120.1.1 | Adjust-Anycast, Amazon, Google | Does not save the history, a bit faster then stock Firefox, no apps so no uMatrix so loads all third party objects like css and scripts which can be a privacy concern | ||
Ghostery | 221004 | Y | Amazon, Google and Adobe (Cloudfront), Bunnyinfra.net, Wikimedia | ||
Iron | 102.0.5005.79 | N | Google, Github (Microsoft), Cloudflare, Linode.com4) | ||
Opera Touch | 72.5.3767.69342 | Opera, Amazon, Google and Adobe (Cloudfront), Cloudflare and Facebook | |||
Privacy Browser | N | Euro 1,19 via Google play store | |||
SmartCookieWeb | 16.3 | 220216 | Y | Github.com, Cloudflare, Speedtest.cookiejarapps.com, Google5) | |
Via | 4.4.6 | 221122 | N | Yahoo.com | Choice of search engine or custom |
Vivaldi | 5.6.2868.29 | N | Google, Hringdu6), Fastly |
Brave remarks
Cookies
Close Brave with tapping on ⋮ and then scroll all the way down and tap on Exit. In this way all cookies are removed
Connection issues
When we start Brave with only one tab open, which is set to the homepage which is set to a blank page (about:blank), Brave immediately connects to
Domain | Owner | Country | Remark |
---|---|---|---|
151.101.0.0/16 | Fastly | USA | |
1e100.net | USA | ||
Amazonaws.com | Amazon | USA |
This means that these companies get privacy sensitive information (The combination of: Time, IP address, browserprofile (and more?) at least every time you start Brave and are thus able to track and profile you and maybe more
Cookie deleting issues
New brave delete cookies on closing browser gone harder to find from December 2018
https://community.brave.com/t/manually-adding-cookie-control-exceptions/28664
Firefox remarks
Connection issues
- The homepage in Firefox is set to a blank page (about:blank)
- Firefox is running with all tabs but one closed. In this tab the home page is shown
- Firefox is closed via the Quit option in the menu
- Firefox is started. Now one tab is open and it shows a blank page (about:blank)
- Now Firefox connects to
Domain | Owner | Country | Remark |
---|---|---|---|
13.224.0.0/14 | Amazon Technologies Incorporated(AT-88-Z) | USA | |
Cloudfront.net | Amazon | USA | We see this most of the time |
This means that these companies get privacy sensitive information (The combination of: Time, IP address, browserprofile (and more?) at least every time you start Firefox and are thus able to track and profile you and maybe more
When closed, with Quit in the menu, Firefox will sometimes restart itself!
cloudfront.net
When you get, without visiting a page, cloudfront.net connectionrequests then the couldfront.net virus has sneaked into your android device. You can use the NoRoot Firewall to detect this
Removal
We searched the Internet and clould so far not find a page with instructions on how the remove the software that is connecting to cloudfront.net in Firefox
We tried, and removed on no succes:
App | Result | Remaks |
---|---|---|
Clean Master - Antivirus | No succes | Connects to AmazonAWS.com, Zayo.com (Zayo provides mission-critical bandwidth to the world’s most impactful companies), Some IP nummbers we did not investigate so far |
Kaspersky Mobile Antivirus | No succes | |
Panda Antivirus and VPN installs as Panda Dome | No succes | Connects to AmazonAWS.com, Cloudapp.net (seems to be something from Microsoft), Facebook, Google, Akamai, Cloudfront.net, ccmp.eu (Cheetah Digital is an enterprise, cross-channel marketing solutions provider), Some IP nummbers we did not investigate so far |
Privacy Browser remarks
Clear and Exit
> Settings > Scroll down to the “Clear and Exit” section
Clear everything Clears cookies, DOM storage, form data, the logcat, and WebView's cache\\ Then manually deletes the entire "app_webview" and "cache" directories
Turn this on to clear all those items on exit
Issues
- Check if previous visited websites, of which the tab is closed, after a restart of the app still try to make contact
- Check if content-autofill.googleapis.com wants to make contact initiated by Privacy Browser or by a visited website. This seems only to be the case when used on a LineageOS device
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