Um Android-Erweiterungen zu verwenden, benötigen Sie Firefox für Android. Um Firefox für Desktop-Add-ons zu entdecken, besuchen Sie unsere Desktop-Website.

Anmelden
Add-on-Symbol

Bewertungen für CanvasBlocker

CanvasBlocker von kkapsner

4,6 von 5 Sternen
5
389
4
41
3
21
2
12
1
21
389 Bewertungen
  • von Firefox-Benutzer 14244108, vor 8 Jahren
  • von Firefox-Benutzer 14307734, vor 8 Jahren
    Hello, excellent program, for when a version for the Opera browser ??????

    Antwort des Entwicklers

    geschrieben am vor 8 Jahren
    A version for Opera or Chrome is not planned. They do not provide the necessary APIs to provide the same quality of protection.
  • von Darsh229, vor 8 Jahren
  • von Firefox-Benutzer 14300424, vor 8 Jahren
    It gets the job done.
    Didn't even know I need it until a web page started to abuse canvas to shove ads in your face
  • von Firefox-Benutzer 14097838, vor 8 Jahren
    A must have privacy extension for everyone!
  • von Firefox-Benutzer 14242164, vor 8 Jahren
    Great stuff. I think this should be a "featured extension" in the pivacy and security category.
  • von Firefox-Benutzer 14054127, vor 8 Jahren
    Nice, but the toolbar icon changes color sometimes (red/green). What do the different colors mean?
    Green = I'm save, red = I'm not protected? And what do I have to do for it to protect me again?

    Antwort des Entwicklers

    geschrieben am vor 8 Jahren
    The color change just indicate that something was faked. It's some sort of notification and nothing to worry about.
  • von Detergent, vor 8 Jahren
    I tested this addon with the Panopticlick test from the EFF, and when I check the 'full results' it shows that the hash values are changed every time I have the addon enabled. So I guess it's basically ruining it for people who use these values to track you.

    Antwort des Entwicklers

    geschrieben am vor 8 Jahren
    Exactly this is the idea behind the fake mode.
  • von kondor, vor 8 Jahren
  • von samyueru_beityosef_benmayumi, vor 8 Jahren
  • von Fleet Command, vor 8 Jahren
    It is great, but it'd be much better if the Mozilla Add-ons link embedded in it was language-agnostic. Currently, it is to the German version of the site.

    Antwort des Entwicklers

    geschrieben am vor 8 Jahren
    This issue will be fixed in the next version: https://github.com/kkapsner/CanvasBlocker/issues/219
  • von Firefox-Benutzer 14201700, vor 8 Jahren
  • von Firefox-Benutzer 14191840, vor 8 Jahren
  • von Sean D, vor 8 Jahren
    You are very hard working person :)
  • von pix0wl, vor 8 Jahren
  • von Firefox-Benutzer 12654054, vor 8 Jahren
    Excellent add-on! Thanks for your hard work!
  • von Firefox-Benutzer 14191652, vor 8 Jahren
    Very nice works.
    But it may not pass detective on test page http://101.37.204.139:8080/uapost.html.when try times test, it may enter an endless loop and Let the browser stop working.

    Antwort des Entwicklers

    geschrieben am vor 8 Jahren
    This page doen't even work when no addon at all is installed... but to discuss this further please open an issue at https://github.com/kkapsner/CanvasBlocker/issues
    Communication is much easier there.
  • von zhaqenl, vor 8 Jahren
  • von Firefox-Benutzer 13202285, vor 8 Jahren
  • von The Beard Below My Chin, vor 8 Jahren
    Nice works.
    Please note I test the audio fingerprint at https://audiofingerprint.openwpm.com/ and it causes browser slowdown.

    Antwort des Entwicklers

    geschrieben am vor 8 Jahren
    I know - this page is not written in a peformant way. You can test the audio fingerprint at http://kkapsner.github.io/CanvasBlocker/test/audioTest.html as well.
  • von Firefox-Benutzer 14156124, vor 8 Jahren
    Nice works.
    Please note it does not detect (and block) the code embedded in a url through the
    "data:text/html" directive.
    I don't know if this method it's exploitable in a web page

    example: paste the following code on your navigation bar
    (It's a dots wave single pixel plotter, so it uses getImageData and it works even if you block the readout API):

    edit: sample code moved to pastebin (sorry, pasting the code here does not works):
    https://pastebin.com/pFvdgKNN

    Antwort des Entwicklers

    geschrieben am vor 8 Jahren
    Good point. I will see if this is exploitable. But please open an issue at https://github.com/kkapsner/CanvasBlocker/issues where we can discuss the implications and findings. Also communication is much easier there.
  • von GregDT, vor 8 Jahren
  • von Firefox-Benutzer 13835690, vor 8 Jahren
    Thank you for this extension (and for keeping it opensource). Nowadays it's getting harder and harder to get a sense of real privacy. CanvasBlocker + AdGuard for Windows + Privacy Badger + HTTPS Everywhere + custom user.js helps me feel safer on a growing data collection frenzy.

    Antwort des Entwicklers

    geschrieben am vor 8 Jahren
    You're welcome.
  • von ©®°˜, vor 8 Jahren
    100% unique mean that is not really natural, canvas should not be unique but changed in order to be natural.
    Unique canvas fingerprints will do much worse.
    Is like you said you have a device that never exist.

    To better understand how this work :
    Google already have a full database with all kind of canvas signatures from all worldwide devices (iphone, android, computers, etc...), and if your canvas signature will not match on them database then you fail, it is a prove that your canvas is fake. If you try to spoof the signature then image pixel parameters will not match and again you fail so is almoust imposible to pass canvas.

    On default settings may make it pass the google test.

    For example google will not ask for SMS confirmation when a new gmail account is created because he trust the device you use.

    Most of people must understand why unique signatures is bad practice and all softwares that spoof parameters will make traking services to detect the device much easy

    Antwort des Entwicklers

    geschrieben am vor 8 Jahren
    Please open an issue at https://github.com/kkapsner/CanvasBlocker/issues where we can discuss this. AMOs rating comments are too limited to have a good conversation.

    One small comment on unique signatures: they are not bad by itself as long as they are not persistend (i.e. the timestamp you connect to the server is very likely to be a unique signature but it's not persistent). This is the case in the CB default settings.
  • von Firefox-Benutzer 14039775, vor 8 Jahren