Patience Haggin / Wall Street Journal:

Adalytics: DoubleVerify, IAS, and Human Security, paid by advertisers to detect bots, regularly miss such traffic; DoubleVerify missed 21% of bot visits  —  Companies that claim to help brands avoid serving digital ads to bots regularly miss nonhuman traffic

Patience Haggin / Wall Street Journal:

Adalytics: DoubleVerify, IAS, and Human Security, paid by advertisers to detect bots, regularly miss such traffic; DoubleVerify missed 21% of bot visits  —  Companies that claim to help brands avoid serving digital ads to bots regularly miss nonhuman traffic

Source: TechMeme
Source Link: http://www.techmeme.com/250328/p35#a250328p35