Nbryb dot com Pop-Ups on Mac
There are a large number of potentially unwanted applications that can make their way on your Mac or nest in your favorite browser without your knowledge. The pop-up ads associated with the domain nbryb dot com are originating from a similar potentially unwanted application.
Those pop-ups usually come from a browser hijacker that also shares some similarities with adware, as it can display intrusive and unwanted advertising, interrupting your normal browsing experience. Those browser hijackers can end up on your system in a variety of ways. Those include bundle installers - application packages containing multiple apps, one or more of which can be potentially unwanted apps.
Another way a browser hijacker can end up on your system are websites that keep nagging you to allow web notifications. In a lot of cases, legitimate sites use this tool to notify you of new articles or news pieces.
However, some malicious websites abuse this functionality, nagging users to allow notifications. If the user agrees, the website can quietly install a browser extension that acts as a potentially unwanted app, displaying intrusive advertising and potentially luring users to unsafe websites that may contain additional malware.
As of the time of this writing, it appears nbryb dot com has been partially taken down. The top-level page on the site displays a fake YouTube video player frame, with a static image that says "Skip ad" on it.
To avoid potentially unwanted apps of this kind, make sure to always download your applications from reliable sources. Some free download sites will host bundle installers containing PUAs. Your best bet is to stick to completely secure, well-curated download portals such as the official App Store.