The DAO hack and the 2026 legal reckoning for Ethereum

The 2016 split

The DAO launched on April 30, 2016, and raised over $150 million in Ether. This project attracted 11,000 investors and controlled 14% of all Ether in circulation. The top 100 holders held over 46% of all DAO tokens, while the largest investor held less than 4% of all DAO tokens. On June 17, 2016, an attacker used a recursive call vulnerability to siphon 3.6 million Ether, worth $50 million, into a child DAO. The hacker moved these funds into an account subject to a 28-day holding period under the terms of the Ethereum smart contract. The Ethereum community faced a choice between following the code or intervening to protect the funds. I find the hard fork decision the only way to save the network. On July 20, 2016, at block 1,920,000, the network executed a hard fork to return funds to original owners. This action created two chains. The project was meant to organize both commercial and non-profit enterprises.

The community split.

The philosophical divide

Ethereum Classic keeps the original, unaltered ledger.

The 2016 split was ideological. Ethereum supporters embraced social consensus to correct unjust outcomes. Ethereum Classic supporters adhered to the principle that code is law. This principle dictates that the outcome of a smart contract must remain final and binding. The attacker followed the rules perfectly.

The 87% of the 4,542,416 ETH that voted for the fork favored social consensus. Critics rejected this. They preferred immutability. The community was not unified. Do users truly want a ledger that changes?

Ethereum Classic remains the largest smart contract platform secured by proof of work. Its community insists it is the true continuation of the original chain. The network has a hard cap of 210,700,000 tokens. The next fifthening occurs in mid-2026. In 2025, the ETChash hashrate surpassed 300 terahashes per second. The network maintains 90 to 95 percent of all ETChash mining power. After a series of 51% attacks in 2020, the community deployed the MESS upgrade in October 2020 to penalize large block reorganizations. The network uses a deflationary emission schedule where block rewards reduce by 20% every 5,000,000 blocks.

Legal implications in 2026

The 2026 legal landscape tests the definition of a decentralized entity. The SEC issued guidance on March 17, 2026, to clarify how the Howey test applies to crypto assets. This guidance arrived as a joint agency action with the CFTC. The Howey test examines whether a contract involves an investment of money, a common enterprise, and an expectation of profits from the efforts of others. The U.S. District Court for the Southern District of New York ordered bifurcated discovery to determine if a centralized exchange acted as a statutory seller for users who transacted in tokens. This distinction matters. You should watch the fallout from the 2025 decisions closely.

The SEC taxonomy includes Digital Commodity, Digital Collectible, Digital Tool, Stablecoin, and Digital Security. In August 2025, the court in In re: EthereumMax Investor Litigation in the Central District of California granted class certification for claims of unregistered securities. In March 2025, the Middle District of Florida case De Ford v. Koutoulas granted class certification for claims of unregistered securities. These decisions show that plaintiffs continue to use the sale of unregistered securities to target issuers. Does the classification of a token as a security depend on the developer’s level of control?