Anyone knows Canvas blocking extension for Opera? I use Yandex, which keeps moving towards Opera, so Chrome extensions keep stopping working, like CanvasFingeprintblock now.
Hi, I got %100 on https://browserleaks.com/canvas - "0 user agents have the same signature"; is this a good outcome or not? Is it easier to identify etc.?
I'd say, that depends. Quite generally this result means that you're perfectly identifiable. However, if you're using an add-on like Canvas Defender which creates noise by creating a new fingerprint with every browsing session or even every x minutes this result is basically meaningless, IMHO.
By any chance, is your signature 5820BEE4 ? Just thinking, that maybe blocking canvas displays some default signature/file.
The webExtension version of CanvasBlocker is available (Beta): Spoiler: Changelog 0.4.0 Beta RC2 Version 0.4.0: changes: - switched to webExtension - notifications are now done via page action - minimal and maximal fake size are now respected in all fakeable functions - fake readout now fakes one pixel at once and no longer one single channel - new icon (special thanks to Thorin-Oakenpants) new features: - information of all fake events in one tab are visible - settings page now only shows settings that are useful within the given settings set - new preferences: * minimal fake size * setting to enable the inspection of the content of the faked canvas * new random number generator "constant" * setting to not fake the most frequent colors in a canvas * setting to enable canvas cache * setting to hide expert settings * setting to control if the alpha channel should be faked as well fixes: - ask mode did not work for input types - allow page scripts to overwrite the faked funtions - getImageData also faked when using fakeInput mode
recommended because of AMO (current in firefox 57+) https://addons.mozilla.org/en-us/firefox/addon/no-canvas-fingerprinting/ replacement for "Canvas Fingerprint Blocker" (current in firefox <57) because of chromium https://chrome.google.com/webstore/detail/canvas-defender/obdbgnebcljmgkoljcdddaopadkifnpm
I checked Chrome @ https://browserleaks.com/ and it shows that WebGL is enabled, which is correct I guess, but should we disable it? I've found Disable WeGL in the Chrome store which works, but I don't know what the implications of disabling WeGL are? Any advice appreciated.
I disabled it using the Disable WebGL extension What is WebGL and why it’s dangerous? WebGL (Web-based Graphics Library) is a collection of code for JavaScript that makes it possible for a website to access your video card in order to display interactive 3D-graphics using the HTML5 Canvas element—without using any third-party plug-ins. WebGL can be a threat to your device security and online anonymity. http://ipleak.com/articles/what-is-webgl-and-how-to-disable
Cool, thanks! So does disabling WebGL only stop the fingerprinting or does it disable part of the browsers capability and function too.
The webExtension version v0.4.0.1 of CanvasBlocker has now been released: Download (AMO) Spoiler: Changelog 0.4.0 / 0.4.0.1 https://github.com/kkapsner/CanvasBlocker/releases/tag/0.4.0.1-Release fixes: - some web pages are broken (e.g. twitch.tv) https://github.com/kkapsner/CanvasBlocker/releases/tag/0.4.0-Release Version 0.4.0: changes: - switched to webExtension - notifications are now done via page action - minimal and maximal fake size are now respected in all fakeable functions - fake readout now fakes one pixel at once and no longer one single channel - new icon (special thanks to Thorin-Oakenpants) new features: - information of all fake events in one tab are visible - settings page now only shows settings that are useful within the given settings set - new preferences: * minimal fake size * setting to enable the inspection of the content of the faked canvas * new random number generator "constant" * setting to not fake the most frequent colors in a canvas * setting to enable canvas cache * setting to hide expert settings * setting to control if the alpha channel should be faked as well fixes: - ask mode did not work for input types - allow page scripts to overwrite the faked funtions - getImageData also faked when using fakeInput mode Edit: New version v0.4.0.1
Hi mood. I have 0.3.8 installed and it isn't updating, so I guess I need to remove the older version, then install 0.4.0? Thanks. Edit: Never mind, it just updated. Cheers!
Webextension are usable since v48 - not compatible means that there is code working which is not applicable in firefox 52. current is 0.4.0.1 https://addons.mozilla.org/en-US/firefox/addon/canvasblocker/versions/ (0.3.8 was latest for older versions <v57) #edit had to switch from canvas defender to canvas blocker because router interface is blocked (firefox showing yellow slowing down message)
Hi I just installed FF 57b7 but the https://browserleaks.com/canvas test is no good as compared to my chrome browser which shows a pretty clean sheet It shows fingerprints despite having. CanvasBlocker Shape Shifter See test result below Canvas (basic support) ✔ True Text API for Canvas ✔ True Canvas toDataURL ✔ True Database Summary Unique User-Agents 177962 Unique Fingerprints 6250 Your Fingerprint Signature ✔ 16896AAD Uniqueness 100% (0 of 177962 user agents have the same signature) Image File Details File Size 4820 bytes Number of Colors 323 PNG Hash 98E7312913AF3A35617B04A4F174421F PNG Headers Chunk Length CRC Content IHDR 13 477A703E PNG image header: 220x30, 8 bits/sample, truecolor+alpha, noninterlaced IDAT 4763 16896AAD PNG image data IEND 0 AE426082 end-of-image marker In Chrome browser I'm getting the below Canvas (basic support) ✔True Text API for Canvas ✔True Canvas toDataURL ×False Database Summary Unique User-Agents 177962 Unique Fingerprints 6250 Your Fingerprint Signature n/a Uniqueness n/a Anyway to minimize the fingerprints further? Thanks again
CanvasBlocker: The default is to fake the signature (fake readout API). If you want to block it, you have to go into the settings and change the mode (block readout API) Now (Firefox):
I forgot... even if you choose to fake it, your real signature is not shown on browserleaks. It is showing the (fake) signature which was generated by CanvasBlocker.
