Between 2012 and 2020, Montiera.com was flagged by security software as a source of potentially unwanted programs (PUPs), specifically adware and browser hijacker toolbars that generated unwanted pop-up advertisements. Reports indicated the site, often appearing as widgets.mpv.montiera.com, caused issues with browser settings and necessitated the use of security software for removal. For more details, visit Malwarebytes . How to get rid of montiera.com | Firefox Support Forum