User blog comment:Brandon Rhea/Intro to Wiki Modernization/@comment-25051390-20170307002758/@comment-20644-20170307003549

Yes, it does reduce the potential for that. In our advertising blog series in January (Part 1 is here, and the links to Part 2 and Part 3 are at the top), we talked a lot about programatic advertising vs direct advertising. Programatic advertising is where we work with third party ad exchanges that provide us with advertisements. We have strict rules for what kinds of ads can be sent to us, but some ad exchanges don't play by the rules and that's where the occasional problematic ad comes from.

Our goal is for the vast majority of ads on the site to be from direct advertising, which means we work directly with the advertisers to create the ads. With direct ads, we can ensure that problematic ads, like malware, don't slip through.