Check-update-today.com

Users seeing advertisements or unwanted notifications coming from a website named 'Check-update-today.com' might have an intrusive PUP (Potentially Unwanted Program) active on their mobile devices or computers. These devious applications are often injected into shady software bundles or fake installers, as a way to avoid being noticed by users. Once established, they could perform various, unwanted actions on the device.

In the case of Check-update-today.com, users are likely to receive dubious advertisements and notifications. Interacting with the advertisements requires caution, as they could be promoting various, dubious and unsafe destinations or software products. PUPs with adware capabilities are often used as a way to deliver advertisements for fake giveaways, technical support or phishing tactics, questionable betting/gaming platforms, etc. They also may try to convince users to download additional PUPs presented as seemingly legitimate applications.

In general, PUPs are not considered to be malware and do not pose a direct danger to the system they are installed on. However, the presence of such an application may carry significant privacy or security risks. After all, PUPs are notorious for spying on users' browsing activities by collecting and transmitting their browsing history, search history, clicked URLs and other details. Some PUPs could even try to access browsers' autofill data. If successful, the application may be able to compromise sensitive information, such as account usernames and passwords, banking details, payment information, credit/debit card numbers, etc.