Recenze doplňku CanvasBlocker
CanvasBlocker od kkapsner
359 recenzí
- Hodnocení: 5 z 5od uživatele Uživatel Firefoxu - 14242164, před 7 letyGreat stuff. I think this should be a "featured extension" in the pivacy and security category.
- Hodnocení: 5 z 5od uživatele Uživatel Firefoxu - 14054127, před 7 letyNice, 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?Odpověď vývojáře
zveřejněno před 7 letyThe color change just indicate that something was faked. It's some sort of notification and nothing to worry about. - Hodnocení: 5 z 5od uživatele Detergent, před 7 letyI 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.
- Hodnocení: 5 z 5od uživatele kondor, před 7 lety
- Hodnocení: 5 z 5od uživatele samyueru_beityosef_benmayumi, před 7 lety
- Hodnocení: 5 z 5od uživatele Fleet Command, před 7 letyIt 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.
Odpověď vývojáře
zveřejněno před 7 letyThis issue will be fixed in the next version: https://github.com/kkapsner/CanvasBlocker/issues/219 - Hodnocení: 5 z 5od uživatele Uživatel Firefoxu - 14201700, před 7 lety
- Hodnocení: 5 z 5od uživatele Uživatel Firefoxu - 14191840, před 7 lety
- Hodnocení: 5 z 5od uživatele pix0wl, před 7 lety
- Hodnocení: 5 z 5od uživatele Uživatel Firefoxu - 12654054, před 7 letyExcellent add-on! Thanks for your hard work!
- Hodnocení: 5 z 5od uživatele Uživatel Firefoxu - 14191652, před 7 letyVery 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 letyThis 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. - Hodnocení: 5 z 5od uživatele zhaqenl, před 7 lety
- Hodnocení: 5 z 5od uživatele Uživatel Firefoxu - 13202285, před 7 lety
- Hodnocení: 5 z 5od uživatele The Beard Below My Chin, před 7 letyNice works.
Please note I test the audio fingerprint at https://audiofingerprint.openwpm.com/ and it causes browser slowdown.Odpověď vývojáře
zveřejněno před 7 letyI 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. - Hodnocení: 5 z 5od uživatele Uživatel Firefoxu - 14156124, před 7 letyNice 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/pFvdgKNNOdpověď vývojáře
zveřejněno před 7 letyGood 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. - Hodnocení: 5 z 5od uživatele GregDT, před 7 lety
- Hodnocení: 5 z 5od uživatele Uživatel Firefoxu - 13835690, před 7 letyThank 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.
- Hodnocení: 5 z 5od uživatele ©®°˜, před 7 lety100% 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 easyOdpověď vývojáře
zveřejněno před 7 letyPlease 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. - Hodnocení: 5 z 5od uživatele Uživatel Firefoxu - 14039775, před 7 lety
- Hodnocení: 5 z 5od uživatele Gummi, před 7 letyCan'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 letyThis 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. - Hodnocení: 5 z 5od uživatele Uživatel Firefoxu - 13837360, před 7 letyKeep up the good work and thank you.