atozmath.com: detection

[bymaul]

Prerequisites

• [X] I read and understood the policy as to what is a valid filter issue
• [X] I verified that the issue has not already been reported (use this button to find out)
• [X] I forced an update of my filter lists (how to do this: click "Purge all caches", then click "Update now")
• [X] I did not remove any of the default filter lists
• [X] I have no custom filter lists, or I verified that the issue still occurs without custom filter lists
• [X] I am not using another content blocker along uBO

URL address of the web page

https://atozmath.com/CONM/Bisection.aspx?q=nr&q1=4x%5E3-15x%5E2%2Bx-9%60%60true%602%604%601%608&dp=8&tm=R&do=1

Category

detection

Describe the issue

Adblocker detected

Screenshot(s)

Screenshot(s)


Configuration

```yaml uBlock Origin: 1.39.2 Chromium: 96 filterset (summary): network: 78201 cosmetic: 39357 scriptlet: 16194 html: 0 listset (total-discarded, last updated): default: easylist: 61059-6, 3d.23h.56m easyprivacy: 26427-17, 3d.23h.54m plowe-0: 3697-810, 8d.2m ublock-abuse: 74-0, 3d.23h.52m ublock-badware: 3532-63, 3d.17h.15m ublock-filters: 29818-119, 3d.17h.13m ublock-privacy: 197-2, 3d.17h.11m ublock-unbreak: 1702-38, 3d.17h.9m urlhaus-1: 8444-0, 4h.28m filterset (user): [empty] switchRuleset: added: [array of 2 redacted] modifiedUserSettings: [none] modifiedHiddenSettings: [none] supportStats: launchToReadiness: 471 launchFromSelfie: true popupPanel: blocked: 2 ```

[iam-py-test]

I can reproduce the issue: https://user-images.githubusercontent.com/84232764/145210892-b34ec463-a1ab-49c0-8bb4-d0c7283023b8.png

https://user-images.githubusercontent.com/84232764/145210845-88b61c54-064d-44f0-be40-4d71283f97d5.png You have to click Click here to display next solution steps (part - 2 / 4) and wait for it to appear Can reproduce with default settings + updated filters, and with modified settings (with AG base enabled)

The site seems to use https://atozmath.com/Scripts/advertisement.js as bait, but as that isn't blocked, I'm not sure how it is detecting an adblocker

[gorhill]

You have to click Click here to display next solution steps (part - 2 / 4) and

I don't see that sentence in the page reached through the URL provided by OP.

[iam-py-test]

You have to click Click here to display next solution steps (part - 2 / 4) and

I don't see that sentence in the page reached through the URL provided by OP.

So can you now reproduce the issue?

[gorhill]

OK I finally reproduced, I had to click the Find button first.

From what I see, it's not a hard anti-blocker, the message can be easily hidden with a cosmetic filter (atozmath.com###lblAdContent), so maybe something for "uBlock filters -- Annoyances"?

[iam-py-test]

OK I finally reproduced, I had to click the Find button first.

From what I see, it's not a hard anti-blocker, the message can be easily hidden with a cosmetic filter, so maybe something for "uBlock filters -- Annoyances"?

How can it be bypassed? To see the solution, you have to click that

[gorhill]

Isn't by design? OP does not provide any description, I don't know whether the delay is by design to discourage people from looking up the solution immediately.

[iam-py-test]

Edit: Whoops, posted twice

[stephenhawk8054]

I think OP is missing details to reproduce it. When there are no anti-adblock message, the whole solution of the Math problem appears after clicking on the steps.

Screenshot


If anti-adblock appears, it just resets to first page.

[iam-py-test]

@bymaul more details please

[stephenhawk8054]

I think the steps are:

1. Click on the Find button
2. Click on Steps 2/4 and wait for the countdown.
3. Click on Steps 3/4 and wait for the countdown.
4. Anti-adblock appears and no solutions for the math problem are provided.

The expected result is as in the screenshot I posted above.

[stephenhawk8054]

Also I guess this inline script checks the class adsbyvli, which is not loaded when blocking bilsyndication.com and imasdk

```js $(document).ready(function() { var Cnt = 0; var x = window.setInterval( function() { var h = 0, Sh = ""; var w = 0, Sw = ""; var Svi1 = "",Svi2 = "";//Svi3 = ""; $(".adsbyvli").each(function( index ) { var h1 = $(this).height(); if(h < h1) h = h1; Sh += Math.round(h1)+"~"; Svi1 += $(this).attr("data-ad-slot")+"~"; Svi2 += $(this).text().length+"~"; // Svi3 += $(this).attr("data-id")+"~"; var w1 = $(this).width(); if(w < w1) w = w1; Sw += Math.round(w1)+"~"; }); // if(Cnt%5==0) // { // console.log("Sh="+Sh+";"); // console.log("Svi1="+Svi1+";"); // console.log("Svi3="+Svi3+";"); // console.log("Svi2="+Svi2+";"); // } document.cookie = "BAdBlock3="+ Math.round(h); document.cookie = "BAdBlock4="+Sh; document.cookie = "BAdSvi1="+Svi1; document.cookie = "BAdSvi2="+Svi2; document.cookie = "BAdBlock5="+ Math.round(w); document.cookie = "BAdBlock6="+Sw; if(Cnt==0) { var hCode = ""; hCode = "7"; document.getElementById("hCode").value = hCode; } // if (Cnt>=180)//if (Cnt>=50) // { // clearInterval(x); // return; // } Cnt++; }, 1000); }); ```

When I allow those 2 domains in the popup panel, that class appears (with ads and blank placeholders) and no anti-adblock.

[iam-py-test]

I wonder - is there a way to spoof that so it thinks those classes exist? (maybe new scriptlet???)

[gorhill]

Still not sure how this site is supposed to work... Anyway, this works?

atozmath.com##+js(nosiif, .adsbyvli)

[iam-py-test]

Still not sure how this site is supposed to work... Anyway, this works?

atozmath.com##+js(nosiif, .adsbyvli)

No effect for me

[stephenhawk8054]

Still not sure how this site is supposed to work... Anyway, this works?

atozmath.com##+js(nosiif, .adsbyvli)

I'm afraid not. After clicking on Steps 2/4, it cannot continue and resets back to original page with another red line of warning:

Please click on Find button again, only after 10 seconds or after page is fully loaded with Ads and Google reCAPTCHA. Please unblock any Adblocker and click on Google reCAPTCHA symbol at right bottom corner. If problem persists then restart the browser or submit the feedback form with screen shot

Screenshot


Looks like it needs that script to continue.

[gorhill]

checks the class adsbyvli, which is not loaded

When I enter ##.adsbyvli in the element picker, it finds 12 matching elements while those 3rd parties are blocked.

[stephenhawk8054]

checks the class adsbyvli, which is not loaded

When I enter ##.adsbyvli in the element picker, it finds 12 matching elements while those 3rd parties are blocked.

Oh I see. Or maybe it checks that class's height and width?

[gorhill]

Yes, but I tried atozmath.com##.adsbyvli:style(height:1px!important;width:1px!important) and it seems the page has other means to detect beside this. Anyway for now I gave up as I get a blank page.

[stephenhawk8054]

I got a blank page too. Thought it detects my ip when reloading that page too many times 😅

[uBlock-user]

Site also inserts detection cookies, so clear them each time you test.

[stephenhawk8054]

Site also inserts detection cookies, so clear them each time you test.

Actually I tested it in Private Window, but still got blank page. Should I do anything else?

[uBlock-user]

Do you see anti-adblock notice with uBO disabled ? Try few times.

[iam-py-test]

Do you see anti-adblock notice with uBO disabled ? Try few times.

No: (new Private Browsing window)

[stephenhawk8054]

I used VPN and the website works for me again. Btw, when I whitelist the current cosmetic filter and add gorhill's filter, it works for me, no more anti-adblock. Can anyone else check?

atozmath.com#@#.menubg .adsbyvli[data-ad-slot][data-width]:not([data-height="250"]),#top.table0 .menubg .adsbyvli[data-ad-slot]:not([data-width]):style(height:250px !important;position:absolute !important;left:-3000px !important)
atozmath.com##.adsbyvli:style(height:1px!important;width:1px!important)

But it leaves a little annoyance white line at the background for me.


[iam-py-test]

I used VPN

Where did you set the end location at?

[stephenhawk8054]

I used VPN

Where did you set the end location at?

Just the same country as mine (Vietnam) and it works fine.

[uBlock-user]

But it leaves a little annoyance white line at the background for me.

atozmath.com##.adsbyvli:style(height:0px!important;width:0px!important)

Works fine.

[iam-py-test]

Yep, works for me with VPN to Vietnam or US. I think it just blocklisted my ip

[stephenhawk8054]

But it leaves a little annoyance white line at the background for me.

atozmath.com##.adsbyvli:style(height:0px!important;width:0px!important)

Works fine.

Ah right, thought it shouldn't be 0, but it actually works 👍

// Btw, actually I think any VPN location is ok 😅

[stephenhawk8054]

Looks like the anti-adblock is back, even with new filter.

[stephenhawk8054]

So I tested with the site and I honestly don't know how this site works and can't find a way to bypass the anti-adblock without allowing and defusing these scripts/xhr:

atozmath.com#@#.adsbyvli:style(height:0px!important;width:0px!important)
atozmath.com##vli[id^="ifr_vi"]

atozmath.com##+js(no-xhr-if, bilsyndication)
@@||services.bilsyndication.com/adv1/*$script,domain=atozmath.com
@@||biltag.bilsyndication.com/v1/*$script,domain=atozmath.com
@@||assets.bilsyndication.com/prebid/default/*$script,domain=atozmath.com
||assets.bilsyndication.com/plugins/*$script,redirect=noopjs,domain=atozmath.com
||imasdk.googleapis.com/js/sdkloader/ima3.js$script,redirect=noopjs,domain=atozmath.com

||quantumdex.io^$domain=atozmath.com
||a-mx.com^

Although it looks like the malicious resources are blocked already, but it still tries to spam hundreds of connections and ask for user's location so I have to add more defusing scriptlets to block those:

atozmath.com##+js(set, window.vlipbChunk, noopFunc)
atozmath.com##+js(set, vitag.enableGeoLocation, false)
atozmath.com##+js(aost, Object.assign, callBids)
atozmath.com##+js(no-xhr-if, vliplatform)

which happen in this script: https://assets.bilsyndication.com/prebid/default/prebid-6.4.0.js

but finally I can go through the steps and no anti-adblock triggers nor the site spams hundreds of connections. However, I can't find a way to collapse the placeholders tho. Every time I try it (even with pixel > 0 in style), the anti-adblock appears.

[stephenhawk8054]

The site detects adblock again. Looks like due to this filter to hide the video player at the top.

atozmath.com##vli[id^="ifr_vi"]

Using this helps bypass it:

atozmath.com#@#vli[id^="ifr_vi"]
atozmath.com##.videoDiscovery

[stephenhawk8054]

Anti-adblock again. I'm not sure if I tested correctly or not, but editing the aost filter works for me:

atozmath.com#@#+js(aost, Object.assign, callBids)
atozmath.com##+js(aost, Object.assign, bidsBackHandler)

Can anyone else test it?

[shahpiyushn]

Dear sir, I am from atozmath.com, Started this project since 2003, and my earning started from Ads since last 1 year. Right now my totally income is depend on this and nothing else.

You are geneius and great mind, I had provided lots of times to develop this. My earnings are totally depend of this Ads. Without it, its not possible for me continue this.

I dont know about Anti adblock coding, but I need money so writing something that may work. And my most of time is wasted to find out Ad block and develop anti block code. So I am not able to focus on new development.

So I please request to to allow to me focus on my development and allow me to earn from my work. I am not forcing any people to use this but just forcing to allow ads so that I can earn from that.

Thanking you Piyush shah

[iam-py-test]

I dont know about Anti adblock coding, but I need money so writing something that may work.

Ask for donations. Create a paywall. Offer a paid service with more features

I am not forcing any people to use this but just forcing to allow ads so that I can earn from that.

What are you doing to stop malvertising, or malware/scam ads? What are you doing about tracking ads? Many people use adblockers to protect themselves against those.

So I please request to to allow to me focus on my development and allow me to earn from my work.

We don't allowlist websites.

Right now my totally income is depend on this and nothing else.

Maybe you should find another source of income. Even if we allowlisted your website, people will just switch to another adblocker, or blocklist those ads using their HOSTs file, or one of the other 1000 other ways people can block ads.

[uBlock-user]

I dont know about Anti adblock coding,

and yet you circumvent our filters..yeah right.

[iam-py-test]

Is https://github.com/shahpiyushn/website the source code of your website? Nevermind, if it is, it's years old

[shahpiyushn]

Ask for donations. Create a paywall. Offer a paid service with more features

: For donation link already kept but get nothing, Dont want to charge user because I think education must be free for all kind of users, so since hosted till now its free for all and for life time. 

What are you doing to stop malvertising, or malware/scam ads? What are you doing about tracking ads? Many people use adblockers to protect themselves against those.

I have no idea about that I am using valueimpression.com Ad company only, which is good and providing good Ads. My website is mathematical education based, I had confirmed with that about the Ads must be suitable for student. I had also tested the Ads and all are suitable for students purpose. So sir, please allow to earn from this. There are lots of calculator I had developed which are not available on any other website.I had given lots of time for this and stilll work is on for this.

[shahpiyushn]

I dont know about Anti adblock coding, and yet you circumvent our filters..yeah right.

I know only mathematical programming and I need money so I have to try all the possibility code.

[shahpiyushn]

Is https://github.com/shahpiyushn/website the source code of your website?

This is not atozmath.com code, Before 5 years I had done only teaching to 1 student about dot net and its that code.At that 1st time I had used github.

[iam-py-test]

I had given lots of time for this and stilll work is on for this.

As a developer, I kind-of can understand. But also that doesn't justify tracking, taking bandwidth, and all the other things ads do

So sir, please allow to earn from this.

2 things:

1. I don't decide anything here. I just have a strong opinion and like to comment on random issues
2. uBlock Origin doesn't allowlist websites. We don't have any kind of websites we feel only have acceptable ads list, and if we ever added one, many users (inc me) would go to another adblocker or fork the code and remove it. Doing that goes against everything uBo stands for.

[uBlock-user]

I need money so I have to try all the possibility code.

Anti-adblock code is defused regardless of what your situation is, no point in arguing any further.

[shahpiyushn]

you can check this google links on which i got top 3 listing and there are some of others also.

https://www.google.co.in/search?q=assignment+problem+calculator
https://www.google.co.in/search?q=Travelling+salesman+problem+calculator
https://www.google.co.in/search?q=Crew+assignment+problem+calculator
https://www.google.co.in/search?q=Simplex+method+calculator
https://www.google.co.in/search?q=0-1+Integer+programming+problem+calculator
https://www.google.co.in/search?q=Vogel’s+approximation+method+calculator
https://www.google.co.in/search?q=stepping+stone+method+calculator
https://www.google.co.in/search?q=PERT+and+CPM+calculator
https://www.google.co.in/search?q=Sequencing+Problems+calculator
https://www.google.co.in/search?q=Game+Theory+Dominance+method+calculator

I had charged any user and I dont wish that. Thats I had not created a student registration and login page. Regards,

[iam-py-test]

you can check this google links on which i got top 3 listing and there are some of others also.

How is that make a difference in this decision? Just a note, probably most people don't even use adblockers anyway

[shahpiyushn]

How is that make a difference in this decision? Just a note, probably most people don't even use adblockers anyway

Ok thanks sir

Regards, Piyush N Shah

[stephenhawk8054]

These edited filters still work for me btw: https://github.com/uBlockOrigin/uAssets/issues/10815#issuecomment-994700399

[stephenhawk8054]

Anti-adblock again. You'll need a VPN to test.

At first, the page will have this message at the top:

*Please disable all AdBlocker immediately, if exists.
(Request-1/3 : Sorry if you may block for access because of AdBlocker)
For solution steps of your selected problem, Please click on Solve or Find button again, only after 10 seconds or after page is fully loaded with Ads

It always appears (even without ublock). After refreshing 2 times, refreshing the 3rd time will have a message of restricting access for 24 hours.

Using these filters helps:

atozmath.com#@#+js(set, window.vlipbChunk, noopFunc)
atozmath.com##+js(set, window.vlipb.installedModules, undefined)

[stephenhawk8054]

The old anti-adblock (can't get past Step 3/6) is back on my side again. I can't find a way to stop malicious 3rd-party connections from requesting, so best way I could find is at least blocking them once. Also switching to other tabs or softwares stops the countdown.

Proposed:

• Filters removed:

atozmath.com##+js(set-constant, window.vlipb.installedModules, undefined)
atozmath.com##+js(no-xhr-if, vliplatform)
atozmath.com##+js(no-xhr-if, bilsyndication)

• Filters added:

@@||ssl.google-analytics.com/ga.js$script,domain=atozmath.com
atozmath.com##+js(no-xhr-if, /^/)
atozmath.com##+js(set, window_focus, true)