If you see 1000-eur.cash pop-ups on your screen, then your computer is probably infected with a browser hijacker, or you have clicked on a corrupted advertisement on the Internet. These undesired alerts are usually generated by adware programs and can have many shapes and forms; for example, they may look like a lucrative offer that claims to save you a lot of money, or a threatening alert saying your anti-malware software has expired and you need to purchase a new copy. What they share is that all of them, typically, contain corrupted scripts that send users to unsafe websites or install malware on their computers directly. Other symptoms of an adware threat are sudden and unsolicited changes in the browser's homepage, default search engine, and new tab settings.
People usually fall into that trap by visiting 1000-eur.cash website, which is one of the many rogue websites created to deliver unsafe advertisements and conduct harmful advertising campaigns. 1000-eur.cash gets users' permission to deliver advertising content to their computer directly through a well-known technique. It shows a fake message:
"1000-eur.cash wants to Show notifications
Click Allow to confirm that you are not a robot!"
This is not a legit CAPTCHA test, and clicking on the "Allow" button means that you accept all browser notifications from this unsafe website. Also, websites like this one can install unnoticed PUPs on your computer. PUPs often track the user's browsing data, like visited URLs, IP addresses and geolocations, and login credentials. Therefore, they should be removed through a reputable anti-malware application.