Omtaler for CanvasBlocker
CanvasBlocker av kkapsner
365 omtaler
- Vurdert til 5 ut av 5av JanKKM, 7 år sidenThe addon works perfectly. I tested all extensions for blocking canvas and this one definitely does the best job.
- Vurdert til 5 ut av 5av Firefox-bruker 14244108, 7 år siden
- Vurdert til 5 ut av 5av Firefox-bruker 14307734, 7 år sidenHello, excellent program, for when a version for the Opera browser ??????
Utviklerrespons
postet 7 år sidenA version for Opera or Chrome is not planned. They do not provide the necessary APIs to provide the same quality of protection. - Vurdert til 5 ut av 5av Darsh229, 7 år siden
- Vurdert til 5 ut av 5av Firefox-bruker 14300424, 7 år sidenIt 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 - Vurdert til 5 ut av 5av Firefox-bruker 14097838, 7 år sidenA must have privacy extension for everyone!
- Vurdert til 5 ut av 5av Firefox-bruker 14242164, 7 år sidenGreat stuff. I think this should be a "featured extension" in the pivacy and security category.
- Vurdert til 5 ut av 5av Firefox-bruker 14054127, 7 år sidenNice, 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?Utviklerrespons
postet 7 år sidenThe color change just indicate that something was faked. It's some sort of notification and nothing to worry about. - Vurdert til 5 ut av 5av Detergent, 7 år sidenI 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.
- Vurdert til 5 ut av 5av kondor, 7 år siden
- Vurdert til 5 ut av 5av samyueru_beityosef_benmayumi, 7 år siden
- Vurdert til 5 ut av 5av Fleet Command, 7 år sidenIt 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.
Utviklerrespons
postet 7 år sidenThis issue will be fixed in the next version: https://github.com/kkapsner/CanvasBlocker/issues/219 - Vurdert til 5 ut av 5av Firefox-bruker 14201700, 7 år siden
- Vurdert til 5 ut av 5av Firefox-bruker 14191840, 7 år siden
- Vurdert til 5 ut av 5av pix0wl, 7 år siden
- Vurdert til 5 ut av 5av Firefox-bruker 12654054, 7 år sidenExcellent add-on! Thanks for your hard work!
- Vurdert til 5 ut av 5av Firefox-bruker 14191652, 7 år sidenVery 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.Utviklerrespons
postet 7 år sidenThis 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. - Vurdert til 5 ut av 5av zhaqenl, 7 år siden
- Vurdert til 5 ut av 5av Firefox-bruker 13202285, 7 år siden
- Vurdert til 5 ut av 5av The Beard Below My Chin, 7 år sidenNice works.
Please note I test the audio fingerprint at https://audiofingerprint.openwpm.com/ and it causes browser slowdown.Utviklerrespons
postet 7 år sidenI 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. - Vurdert til 5 ut av 5av Firefox-bruker 14156124, 7 år sidenNice 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/pFvdgKNNUtviklerrespons
postet 7 år sidenGood 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. - Vurdert til 5 ut av 5av GregDT, 7 år siden
- Vurdert til 5 ut av 5av Firefox-bruker 13835690, 7 år sidenThank 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.
- Vurdert til 5 ut av 5av ©®°˜, 7 år siden100% 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 easyUtviklerrespons
postet 7 år sidenPlease 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.