Ethereum co-founder Vitalik Buterin has highlighted the need for enhanced privacy measures as AI agents become more prevalent. He emphasized that user behavior data is increasingly exposed during searches and API calls, necessitating the use of encryption technologies to protect access patterns. Buterin suggested employing privacy networks like mixnets to obscure request origins. However, he also stressed the importance of integrating anti-DoS mechanisms and a pay-per-call model to prevent overwhelming service providers with traffic.