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Análises de CanvasBlocker

CanvasBlocker por kkapsner

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Análise de Usuário 14156124 do Firefox
por Usuário 14156124 do Firefox, há 7 anos
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

Resposta do desenvolvedor

publicado há 7 anos
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.
462 análises
  • por Usuário 19490358 do Firefox, há 4 dias
  • por Usuário 19265671 do Firefox, há 6 dias
    Really good
  • por Edgar Almeida, há 17 dias
    Seems to work, if you test it at browserleaks(dot)com / canvas with the plugin on, keeps giving new signatures at each refresh, if you turn the plugin off, the signature will remain the same
  • por 魔王, há 22 dias
  • por Kal, há 23 dias
    Doesn't seem to work. Visited the EFF page (coveryourtracks.eff.org) to check fingerprinting and no luck.
  • por Zertrax, há um mês
    Works very well. If you want to test this addon whether it works or not, just visit the page which is mentioned in the description. (for example: browserleaks website)

    It's just a shame that I only recently discovered canvas fingerprinting, even though it's been around for so long. Keep your privacy up folks.
  • por BRUHCORE, há um mês
    memory leak on YouTube
  • por 0x_numerolog, há um mês
    Хорошее расширение
  • por whatever, há um mês
  • por VOIIIXI, há um mês
  • por CHANO, há 2 meses
    I became suspicious when there is no tally count, so I went to coveryourtracks.eff. ran the fingerprinting scan and found the app was doing absolutely nothing at all but sitting in my browser collecting info.I will be removing it.And running a system malware scan.
  • por Usuário 19145735 do Firefox, há 2 meses
  • por Usuário 19141042 do Firefox, há 2 meses
  • por NameOfDisplay, há 3 meses
    I like the concept of the addon but this is basically useless until the developer explains literally anywhere how to add sites to the whitelist and the settings page doesn't absolutely suck.

    Only really useful if you are the developer and understand all of the obtuse menu options.
  • por Mikaela, há 3 meses
  • por BrunoFontes.Net, há 3 meses
  • por Usuário 19062474 do Firefox, há 3 meses
    No instructions on how to use it. Not intuitive to use. I have not a clue if it is doing anything because of this. I will leave it on incase it is working. It would be better as an app to work all the time my device is on rather than just inside my browser.
  • por thevoid, há 4 meses
  • por Сырное, há 4 meses
  • por Usuário 12814982 do Firefox, há 4 meses
    An sich ein wirklich klasse AddOn, was Webseiten definitiv zu schaffen macht.
    Leider bremmst es den Browser je nach Seite extrem aus.
    Gerade Karten-Webseiten wie z.B. Google Maps sind teilweise unbenutzbar, wenn der CanvasBlocker zuschlägt.

    Der Blocker von Firefox selbst, ist hier etwas harmloser, dafür aber auch von der Block-Qualität schlechter.
  • por Rinshun, há 4 meses
  • por Usuário 18642424 do Firefox, há 4 meses
  • por Usuário 14186837 do Firefox, há 4 meses
    Made my rating on EFF's CoverYourTrack tool worse!
  • por Sonya, há 4 meses
  • por Usuário 17288647 do Firefox, há 5 meses
    This is a game changer. This security add-on compliments your VPN and enhances the security of your web surfing experience. You should include this as one part of your layered strategy security plan.