Wu says that Ethereum co-founder Vitalik Buterin stated that with the proliferation of AI agents, users will expose a large amount of behavioral data when performing searches or API calls, so it is necessary to protect access pattern information through encryption privacy technologies. He pointed out that request sources can be hidden using privacy networks like mixnets, but at the same time, anti-DoS mechanisms and pay-per-call models are needed; otherwise, service providers will struggle to handle the traffic load.