Check-me.online is a potentially harmful website that tricks users into subscribing to its promotional push notifications. When people visit the website, they see a black screen and a text message claiming that the visitors need to confirm they are not robots to be able to view the website's content. At the same time, Check-me.online displays a misleading message where the user has to allow notifications by clicking on the "Allow" button.
Users who are willing to click on the "Allow" button will start seeing spam notifications from this website on their screen. These advertisements will show up regularly on top of any other content and promote dubious pages and services on the Internet. Moreover, in some cases, the pop-ups generated by this tactic may even contain malware that installs on the user's computer directly.
Needless to say, Internet users should avoid Check-me.online and never accept notifications from such websites. However, people often get redirected to this page by a Potentially Unwanted Program (PUP), which has infected their device. PUPs can modify browser settings to load a fake website at startup or each time a new tab is opened. In such cases, the computer should be scanned for malware, as some PUPs also can track the user's data and cause severe cybersecurity issues.