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Ikona doplňku

Recenze doplňku CanvasBlocker

CanvasBlocker od kkapsner

Hodnocení: 4,6 z 5
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350 recenzí
  • od uživatele pix0wl, před 7 lety
  • od uživatele Uživatel Firefoxu - 12654054, před 7 lety
    Excellent add-on! Thanks for your hard work!
  • od uživatele Uživatel Firefoxu - 14191652, před 7 lety
    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.

    Odpověď vývojáře

    zveřejněno před 7 lety
    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.
  • od uživatele zhaqenl, před 7 lety
  • od uživatele Uživatel Firefoxu - 13202285, před 7 lety
  • od uživatele The Beard Below My Chin, před 7 lety
    Nice works.
    Please note I test the audio fingerprint at https://audiofingerprint.openwpm.com/ and it causes browser slowdown.

    Odpověď vývojáře

    zveřejněno před 7 lety
    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.
  • od uživatele Uživatel Firefoxu - 14156124, před 7 lety
    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

    Odpověď vývojáře

    zveřejněno před 7 lety
    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.
  • od uživatele GregDT, před 7 lety
  • od uživatele Uživatel Firefoxu - 13835690, před 7 lety
    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.

    Odpověď vývojáře

    zveřejněno před 7 lety
    You're welcome.
  • od uživatele ©®°˜, před 7 lety
    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

    Odpověď vývojáře

    zveřejněno před 7 lety
    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.
  • od uživatele Uživatel Firefoxu - 14039775, před 7 lety
  • od uživatele Uživatel Firefoxu - 12808354, před 7 lety
    Works Fine
  • od uživatele Uživatel Firefoxu - 13965824, před 7 lety
    It's doing it's job
  • od uživatele Uživatel Firefoxu - 13954923, před 7 lety
    Excellent.
  • od uživatele Gummi, před 7 lety
    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!

    Odpověď vývojáře

    zveřejněno před 7 lety
    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.
  • od uživatele Uživatel Firefoxu - 13837360, před 7 lety
    Keep up the good work and thank you.
  • od uživatele Uživatel Firefoxu - 13870378, před 7 lety
  • od uživatele Salsa, před 7 lety
  • od uživatele containers-everywhere, před 7 lety
  • od uživatele citizenserious, před 7 lety
  • od uživatele Uživatel Firefoxu - 13730996, před 7 lety
    Hey there, take a look at Browser Console to know about your add-on's error. Keep up a good work.

    Odpověď vývojáře

    zveřejněno před 7 lety
    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.
  • od uživatele philrj, před 7 lety
  • od uživatele BRW, před 7 lety
    Perfect!!! Thanks!!!
  • od uživatele mibird, před 7 lety
    seemingly good help to browse with more privacy, complex work.
    since update from 17dec, blocks all web-pages :(

    Odpověď vývojáře

    zveřejněno před 7 lety
    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
  • od uživatele Uživatel Firefoxu - 13600531, před 7 lety
    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!