About 9% of desktop display ad spending and 22% of video ad spending was wasted on fraudulent bot traffic, according to the report. That’s a slight decline from the previous report, which marked display advertising fraud at 11% and the fraud rate for desktop video at 23%. Mobile ad fraud was also “considerably lower than expected,” according to the report. “This does not include fraud in mobile web video or pay-per-click fraud, which remain high and problematic,” according to the report. A decline in expected ad fraud is good news, but advertisers shouldn’t let down their guard just yet, said Michael Tiffany, CEO at WhiteOps, in a statement.

Source: Wall Street Journal May 24, 2017 16:52 UTC