Integral Ad Science, or IAS, is a 3rd party vendor which can help both publishers and agencies within the advertising industry better understand the instances of brand safety, fraud, and viewability as it relates to their advertising creatives.
IAS has a very simple and easy to use and understand interface.
Unfortunately, IAS' current reporting system needs some additional work. Their reporting system is overly complicated and not intuitive.
Highly recommend, IAS is top-notch in the industry