Ethereum Hardness Strategy Explained: Holding the Line on Decentralization

Author: @fredrik0x, @soispoke, @parithosh_j

Translation: Deep潮 TechFlow

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The Ethereum Foundation recently announced three main protocol cluster priorities: Scaling, User Experience (UX), and Hardness. The first two are easy to understand, but what is the third?

Simply put, Hardness is a protocol-level commitment to Ethereum’s core attributes, including censorship resistance, privacy, security, and permissionlessness.

This article is written by three Foundation members responsible for the Hardness direction, detailing the specific work and priorities in this area.

The full text is as follows:

What is Hardness

The Ethereum Foundation recently published a blog outlining three protocol cluster priorities: Scaling, User Experience (UX), and Hardness.

Each addresses different needs for Ethereum’s long-term success. Scaling ensures the network can handle global demand, UX ensures people can actually use it, and Hardness ensures that Ethereum doesn’t lose its core attributes as it grows.

Hardness refers to a system’s ability to remain reliable in the future. It is a protocol-level commitment aimed at safeguarding Ethereum’s core guarantees: open source, censorship resistance, privacy, security, permissionless, and trust minimization.

These principles have existed since Ethereum’s inception.

Ethereum exists to provide a neutral infrastructure for those who truly need it, even if that means being more difficult, slower, or less convenient. In practice, this means ensuring Ethereum can continue to operate even if centralized systems fail.

Who needs these? Users from sanctioned countries, journalists protecting sources, organizations requiring neutral settlement infrastructure, and institutions seeking to reduce counterparty risk.

Why focus on Hardness now

Ethereum is pushing major upgrades to throughput and usability. But each improvement could be achieved through shortcuts, such as centralizing infrastructure or introducing trusted intermediaries.

Hardness exists to ensure that Ethereum responds to network demands without deviating from its values.

Today, individuals and institutions rely on these guarantees from Ethereum not as ideals but as essentials. This makes Hardness an increasingly critical focus area.

What Hardness looks like in practice

Within the Ethereum Foundation, the Hardness effort is led by three people, each with a different focus:

Thomas Thiery: Censorship resistance and permissionlessness, focusing on protocol layer

Fredrik Svantes: Security, emphasizing privacy and trust minimization

Parithosh Jayanthi: Infrastructure, upgrades, and resilience of sensitive parts of the Ethereum protocol

Hardness spans multiple domains:

Beyond technical R&D, part of the Hardness work involves helping more people understand and value these core attributes. The team also collaborates with work related to ZK, privacy, scaling, UX, and security (such as Trillion Dollar Security, which focuses more on wallets and application layers) to ensure these improvements accelerate without compromising security or decentralization.

Specific tasks include:

Network resilience: Improving tools, testing, and fuzzing to identify vulnerabilities early and ensure quick recovery after failures.

User protection: Reducing preventable fund losses caused by phishing and malicious approvals.

Privacy: Advancing confidential transfers and anonymous broadcasting at the protocol level so users can enjoy strong privacy without leaving Layer 1.

Maintaining neutrality: Eliminating single points of failure at the network edge to ensure neutrality and resilience against selective interference.

Long-term preparedness: Post-quantum cryptography is not an immediate threat but an unavoidable one, requiring early preparation.

Rollback and recovery modes: As throughput increases, protocols must be able to slow down and stabilize during anomalies, allowing the network to self-heal rather than cascade into failure.

Incident response readiness: Developing shared, public emergency manuals so the ecosystem can respond quickly and transparently in extreme scenarios.

Metrics and reality: Establishing indicators to measure the current level of censorship resistance, how many users can transact privately, and where trust assumptions may be quietly infiltrating.