I've noticed that recently Vitalik has been increasingly raising the issue of censorship and network resilience — and this is not just philosophical pondering. If you think about it, the entire history of Ethereum at some point boiled down to one question: can the network continue to operate if all key developers suddenly disappear? This is not a slogan, but a truly strict standard for decentralization, which Vitalik calls the walkaway test.

In March, he proposed a new framework — the concept of "refuge technology." It sounds abstract, but in reality, these are very concrete engineering challenges. The goal is for Ethereum to function as an open infrastructure that allows people to live, work, communicate, manage assets — all without the risk of being blocked by a small group of people. Vitalik even provided a great metaphor: a true protocol should be like a hammer that you buy and it’s yours, not like a subscription that can be turned off at any moment.

Why is this relevant right now? Because Ethereum has faced a real problem. As block building became more specialized, the right to order transactions started to concentrate among a small number of builders. Theoretically, any of them could refuse to include certain transactions — for example, those sent from addresses subject to sanctions. This is no longer a hypothesis but a real risk.

Two key solutions come into play here. The first is FOCIL (Fork-Choice Enforced Inclusion Lists). The idea is simple: instead of allowing builders to decide which transactions to include, a committee of validators forms a list of mandatory transactions from the open pool. A builder can optimize the order for MEV, but cannot refuse to include legal transactions. FOCIL has already been confirmed for inclusion in the major Hegotá upgrade, expected in the second half of 2026.

But FOCIL only addresses part of the problem. There remains another risk: even if a transaction makes it into a block, it has already been seen in open sandwich attacks and front-running. MEV seekers can deliberately manipulate the order to profit at the expense of ordinary users. DeFi transactions are especially vulnerable in open sandwich scenarios.

To address this, a cryptographic mempool (LUCID and EIP-8105) are proposed. The essence: transactions are encrypted when sent and only decrypted after inclusion in a block and several confirmations. This way, no one can see your intentions in advance, and open sandwich attacks become impossible. Teams working on this have recently joined forces.

Together, FOCIL + cryptographic mempool + ePBS are called the "Holy Trinity of Censorship Resistance." This is not just another update — it’s a signal that Ethereum is once again placing censorship resistance at the core of the protocol’s design.

And here’s what’s interesting: many ask whether this complicates the protocol and potentially reduces efficiency. My answer is that the true value of blockchain has never been just speed or putting assets on-chain. It’s the ability to live and work in the digital space without permission, which is hard to shut down or confiscate. When people can freely act on Ethereum without fear of censorship — then the network truly passes the resilience test. And that is the main goal of refuge technology.