A large amount of traffic on websites is driven by bots and software agents. As a publisher, this type of traffic can affect the success of your campaigns. NHT can skew analytics and also contribute to unwanted impressions and clicks, leading to a negative impact on campaign KPIs.
To optimise campaign performance, create a segment of of known fraudulent traffic in the segment builder, and send into DFP.
I've created a segment where a 'Pageview was performed' where the
client.user_agent contains a known list of bots.
Save the segment and send it to DFP to exclude during campaign optimisation.