Vitalik Buterin emphasizes the importance of encryption privacy for local AI agents, which can prevent the leakage of user behavior during API calls. He mentioned that hybrid networks can initially hide behavior, but service providers need to implement anti-DoS mechanisms, and payment processes involve tracking risks. Encryption technology can effectively protect user privacy.

The Prysm development team recently released an after-action report detailing the mainnet anomaly that occurred after the Fusaka upgrade on December 4, 2025. The issue once threatened the stability of the Ethereum network but was ultimately resolved thanks to the diversity mechanism of client implementations. The report indicates that the problem occurred at epoch 411,392 (December 4 at 21:49 UTC) after the Fusaka upgrade was activated. Prysm consensus clients, when processing certain proof data, triggered大量历史状态的重复计算, leading to rapid exhaustion of CPU and memory resources, causing nodes to experience denial-of-service (DoS)-style performance degradation. This was not a protocol design flaw but an implementation issue within clients under specific boundary conditions.

BlockBeats news, on November 27, Vitalik Buterin published an article stating that end-to-end encryption communication is crucial for privacy protection, emphasizing that the next key step in this field is to support permissionless account creation and metadata privacy, and mentioned that Session and SimpleX are advancing in these directions. He donated 128 ETH to each, while pointing out that decentralization, metadata protection, multi-device support, and Sybil/DoS resistance are still challenges that require more developers to invest in improving such privacy communication tools.