Questionable pop-ups refer to ones that are offered to you in the form of a captcha or the action required for content displaying. The example of a legitimate pop-up ad Questionable These pop-ups will not give you any negative effects besides annoyance - in the case when you allow too many sources and now receive 10-15 notifications each minute. No tricky “robot preventions” are allowed, as well as the attempts to disguise the site of origin as the other, well-known one. Legit pop-ups may be defined as ones issued by a legit site and consciously accepted by you. This divide is conditional since, in arbitrary cases, one can easily obtain the characteristics of another. Pop-up ads/notifications can be divided into 3 types - legitimate, questionable and illegal. Since their contents are even more unpredictable, you can expose your PC to a bigger threat. As a result, you have many notifications out of the blue. Aforementioned malware types modify that config, adding the paths to the pop-up sources they need. A specific procedure requests the pop-up ads in the web browser configuration file. In that case, you do not have to approve the pop-up appearance - malware does everything. The other way of pop-ups appearing is malware activity, particularly adware or browser hijacker. Later, these sites will begin sending them notifications, and the more sites with such a sly trap the user visits - the more massive will be the pop-up spam. Needless to say, users who want to get the info they are looking for will likely click through these dialog windows. Exactly, they can ask him sometimes - but those requests are often disguised as “prove you are not a robot” or “click “Allow” to display the contents”. However, with time flow, crooks who used to earn money on arbitering the traffic discovered that it is possible to show the ads in pop-up notifications without asking the user. Examples of unwanted pop-up advertisements
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