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Recensioner för CanvasBlocker

CanvasBlocker av kkapsner

4,6 stjärnor av 5
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350 recensioner
  • av pix0wl, för 7 år sedan
  • av Firefox-användare 12654054, för 7 år sedan
    Excellent add-on! Thanks for your hard work!
  • av Firefox-användare 14191652, för 7 år sedan
    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.

    Utvecklarens svar

    postad för 7 år sedan
    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.
  • av zhaqenl, för 7 år sedan
  • av Firefox-användare 13202285, för 7 år sedan
  • av The Beard Below My Chin, för 7 år sedan
    Nice works.
    Please note I test the audio fingerprint at https://audiofingerprint.openwpm.com/ and it causes browser slowdown.

    Utvecklarens svar

    postad för 7 år sedan
    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.
  • av Firefox-användare 14156124, för 7 år sedan
    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

    Utvecklarens svar

    postad för 7 år sedan
    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.
  • av GregDT, för 7 år sedan
  • av Firefox-användare 13835690, för 7 år sedan
    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.

    Utvecklarens svar

    postad för 7 år sedan
    You're welcome.
  • av ©®°˜, för 7 år sedan
    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

    Utvecklarens svar

    postad för 7 år sedan
    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.
  • av Firefox-användare 14039775, för 7 år sedan
  • av Firefox-användare 12808354, för 7 år sedan
    Works Fine
  • av Firefox-användare 13965824, för 7 år sedan
    It's doing it's job
  • av Firefox-användare 13954923, för 7 år sedan
    Excellent.
  • av Gummi, för 7 år sedan
    Can't seem to get version 0.4.4b working with Firefox ESR 52.7.2, there's just no icon visible anywhere on the UI.

    Edit: My bad! I remember that this addon had an icon before but nowadays it hasn't. Works great!

    Utvecklarens svar

    postad för 7 år sedan
    This Addon does not have an icon that is always visible. Only a fingerprint icon is displayed in the adress bar when some canvas data was faked for the web page. You can test at http://kkapsner.github.io/CanvasBlocker/test/test.html

    If you still think that it's not working properly try version 0.4.4a and open a new issue at https://github.com/kkapsner/CanvasBlocker/issues

    EDIT: no problem. Glad that it works for you.
  • av Firefox-användare 13837360, för 7 år sedan
    Keep up the good work and thank you.
  • av Firefox-användare 13870378, för 7 år sedan
  • av Salsa, för 7 år sedan
  • av containers-everywhere, för 7 år sedan
  • av citizenserious, för 7 år sedan
  • av Firefox-användare 13730996, för 7 år sedan
    Hey there, take a look at Browser Console to know about your add-on's error. Keep up a good work.

    Utvecklarens svar

    postad för 7 år sedan
    I do not see any errors. Please open an issue at https://github.com/kkapsner/CanvasBlocker/issues where you can describe the scenario when you see the errors.
  • av philrj, för 7 år sedan
  • av BRW, för 7 år sedan
    Perfect!!! Thanks!!!
  • av mibird, för 7 år sedan
    seemingly good help to browse with more privacy, complex work.
    since update from 17dec, blocks all web-pages :(

    Utvecklarens svar

    postad för 7 år sedan
    I currently face weird problems. Please open an issue at https://github.com/kkapsner/CanvasBlocker/issues with all your details (versions, settings, etc.) so that I can find the root cause.

    EDIT: please try version 0.4.4
  • av Firefox-användare 13600531, för 7 år sedan
    This is a fantastic add-on for users who are concerned about privacy while surfing the web because it efficiently detects and blocks/fakes canvas fingerprinting. I use CB on all my machines with Firefox (52-ESR and >57) and it supplements nicely other privacy-related add-ons. Based on my own experience, I can also confirm that it receives superb support by a very helpful and responsive developer. Clearly a must-have five-star addon!