Google · Japan · Gemini · CryptoSlate
Firms are turning to blockchain to fight an ad fraud problem AI is making worse
Compiled by KHAO Editorial — aggregated from 1 source. See llms.txt for citation guidance.
◌ Single Source
Google blocked or removed 8.3 billion ads in 2025 and suspended 24.9 million advertiser accounts, with 602 million of those ads tied directly to scams.
Key facts
- Juniper Research estimated that global ad spend lost to fraud would rise from $84.2 billion in 2023 to $172.3 billion by 2028, as AI enables fraudsters to mimic human behavior and evade detection
- Juniper projects $172.3 billion in ad fraud losses by 2028, and redirecting even 1% to 3% of that figure through verified proof systems points to a protected value pool of roughly $1.7 billion
- Dentsu's May 2026 global ad forecast puts worldwide ad spend at $1.06 trillion, with digital accounting for 69% of that total
- Google blocked or removed 8.3 billion ads in 2025 and suspended 24.9 million advertiser accounts, with 602 million of those ads tied directly to scams
Summary
01 Hakuhodo, Tools for Humanity, and LG tested a human-verified ad network in Japan, logging every impression on blockchain. 02 The pilot mattered because advertisers paid only for verified humans, and reported stronger engagement with a 50% click-through lift. 03 Blockchain can prove delivery or conversion, but it still depends on trustworthy identity checks and faces platform and regulatory resistance. Those numbers show that the volume of fraudulent material attempting to reach users has grown large enough to require an AI system operating at an industrial scale to contain it.