captcha-delivery

finway

oHi gentlefolks,

Not sure where to post this as it's not a bug...

More and more websites are aggressively returning directly a blank page with message
"Please enable JS and disable any ad blocker" when Trackers and Ads are blocked in Vivaldi

I guess due to captcha-delivery script.

Has someone a workaround to avoid it ?
I didn't dig much yet

Thx folks

--
Fin'~

DoctorG

@finway Blocking Cookie Warning pages or Ad/Trackers can cause this.
Is not a Vivaldi bug but a server-sided detection of web page owners who want you to disable blocker. ANs Vivaldi Blocker can not catch all such bad behavior of a site.

Perhaps installing extension uBlockOrigin and disable Vivaldi blocker in Settings → Privacy gives you a better experience.

Pathduck

@finway said in captcha-delivery:

More and more websites

This is much too vague. If you want advice, please post what site(s) you're having issues with. None of the sites I visit daily does this.

Otherwise, the advice given by Doc above, this is nothing Vivaldi can do anything about. This is fully the site's problem. Stop using such sites is my advice, no adblocker is perfect. And if you're blocking JS as well, it would be expected to break most websites anyway.

finway

@DoctorG
@Pathduck
Those are major sellers websites, so it's hard to avoid them.

I dug more :

It works with extensions such as ublock and no Vivaldi trackers or ads blocker protection
but NOT with Vivaldi w/ trackers and/or ads blocker (even without any extension)

So problem seems to come from "Vivaldi" (Chromium?) blocker...

GET https://ct.captcha-delivery.com/c.js net::ERR_BLOCKED_BY_CLIENT

example website:
https://www.norauto.fr

Thx

--
Fin'~

mib2berlin

@finway
Hi, the page is working with enabled Vivaldi ad/tracker, do you have any lists enabled than the default lists?
Sometimes the lists are not updated, uncheck, check update them.

For example:

Cheers, mib

finway

@mib2berlin
Thx will smith
Yes, I use default
this list is indeed my problem
as captcha is blocked in list
https://downloads.vivaldi.com/ddg/tds-v2-current.json

Forcing in white list (exceptions) doesn't seem to work (?)

I added the 3 from this vendor with 'no block':

captcha-delivery.com
datado.me
datadome.co

Edit:

1/ Tracker custom Exceptions do not seem to work (even blocking or allowing) ; I tried all website format, none work, even after restarting app

2/ Custom 'Tracking Blocking Source' works, and adding only 'captcha-delivery.com' blocks the website
Not sure if it should be blocked or not... nor how it is determined to be added into the blocking list

3/ The website 'norauto.fr' is not blocked by default, you need to browse to another page until it thinks you're a robot (click on a link is sufficient for me to happen) ; captcha block the website as blocked in tracker list

Pathduck

@finway Please read:
https://help.vivaldi.com/desktop/privacy/tracking-and-ad-blocking/#Blocking_per_site

You can only add domains to the exception lists where you want the blocking to be active/inactive. You can not add exceptions for requests that domain makes.

If you want to make exceptions for requests, you can make a custom blocklist with exceptions:

! Title: Adblock Filters (personal)
!! EXCEPTIONS
@@||captcha-delivery.com^$domain=norauto.fr

In this case, allow requests to captcha-delivery.com from the domain norauto.fr

This uses the standard ABP ruleset: https://adblockplus.org/filter-cheatsheet

Or, just exclude norauto.fr from blocking. Alternately, disable the DDG Tracker Radar from the lists. IMO the DDG list is a bit too aggressive in blocking certain domains and breaking some sites, but that's the price we pay for privacy.

The reason it works in uBlock is simply because uBlock does not use the DDG Tracker Radar rules.

finway

@Pathduck
Thx !
It seems I've been too much used to interactive blocking offered by extensions
I'll disable (or modify) ddg list as domain option is still too restrictive for me (many websites use this captcha : /)

Pathduck

@finway said in captcha-delivery:

many websites use this captcha

Must be a French thing

First time I've encountered such an aggressive Captcha or a site that triggers it so easily, and site breaks if it's blocked or cookies are blocked. Bad website.

jesus2099

It's a pity that I have to whitelist and allow trackers and ads on many big websites, just because of captcha thing. :C

fnac.com
sncf.fr
https://allegro.pl/oferta/can-t-stop-movin-new-school-vs-old-school-2cd-13944557460
I forgot the others, atm

Please enable JS and disable any ad blocker

DuckDuckGo Tracker Radar should not block captcha that are used on all major websites, IMO.

I will try to find how to report this problem to them but, unfortunately, they don't seem to fix anything (I've been suggesting fixes for broken bangs for years, without any results).

jesus2099

I have opened a ticket at https://github.com/duckduckgo/tracker-radar/issues/306