Detecting malware ads on my site

Question

I recently made my “public service announcement” on my website, in which I told people that there was only one advertisement on the site, and it neatly fit into the site’s design.

I did this because someone reported that the site was “not working,” and when they asked him to take a screenshot of the problem, he provided me with the following:

screenshot with firmware http://ezimba.com/work/140308C/ezimba19743774066600.png

Further research revealed that the problem was a malicious extension called “HD Streamer”.

In general, once the problem has been identified as adware, I point them to MalwareBytes and say "this is your problem, not mine, I need to get back to work now."

This was good overall, and some people learned to train other users who have similar problems. However, not everyone reads the questions asked by others (otherwise we do not need to "Close as a duplicate" here, and now we will?; ))

In any case, essentially. Is there any reliable way to detect the addition of such additional ads to my site via JavaScript?

If I can automatically detect this ... "capture", I could insert my own box to say "hey, do you have adware, maybe it should be cleaned!" ... "Of course, some malicious ads mask themselves like "you have a virus, click here to fix it," so I have to make sure that it is clearly part of the site’s design (colors, perhaps its style as a dialogue bubble belonging to the character of the site with the specified NPC name, something like this ), but I think it would be more useful than just firing them like eloveka who can not keep your computer clean.

Answer 1

, , . document.images , . , (, , ).

var adID = "myAdId";
//incomplete ad resolution list
var widths = [120, 160];
var heights = [600, 600];
var adCount = 0;
for(i = 0; i < document.images.length; i++){
    for(j = 0; j < widths.length; j++){
        if(document.images[i].width == widths[j] 
            && document.images[i].height == heights[j]
            && document.images[i].id != adID){
            adCount++;
            break;
        }
    }
}
if(adCount > 0){
    notifyUser();
}

:

• Wikipedia.
• Chrome, Firefox IE.
• , , , , , .