When Ad Age reported on a multi-million dollar ad fraud operation late last month, those behind the scheme shut it down immediately. But now, slightly more than three weeks after the story published, the operation is back in action.
Once again video ads in nearly invisible windows are being run on legitimate websites via banner ad buys. Such video ads can be sold for 20 times as much as the banner ads, with the fraudsters pocketing the difference.
Online security firm Telemetry, which uncovered the fraud, believes around 100,000 of these bogus ad impressions are now sold each day. The number is nowhere near where the operation stood at its peak, but giant brands such as Unilever are still paying for this inventory.
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