Malwarebytes is on a bit of an educational push with the aim of helping Internet users become more aware of the latest tricks that criminals are using to catch you out. Malvertising is the name we in the security industry give to criminally-controlled adverts which intentionally infect people and businesses. These can be any ad on any site often ones which you use as part of your everyday Internet usage. It is a growing problem, as is evidenced by a recent US Senate report, and the establishment of bodies like Trust In Ads.”]
Source: https://blog.malwarebytes.com/101/2015/02/what-is-malvertising/