We identify a DoS vulnerability with Ethereum's proposed soft-fork for The DAO, and urge the community to be prepared for attacks, and to speed up the timetable for resolving the hard fork decision.

Thursday June 23, 2016 at 10:11 AM by Bill Marino

IC3's resident lawyer-techie discusses why smart contracts need escape hatches and how to implement them.

June 18, 2016 at 01:11 AM by Phil Daian

This post describes how the hacker who took $50+M from The DAO did it.


Ari Juels will give a talk on Exploring the Future of Smart Contracts at EPFL Summer Research Institute.

Emin Gun Sirer will give a talk on Game Theoretic Attacks on The DAO. The event starts at 6:30pm at Cornell Tech in the Google Building, Chelsea, NYC.

Our first IC3 retreat in NYC on June 17, 2016 was a great success, with more than 80 attendees from industry and academia. The slides and video from the retreat are now available at the link above

IC3 Researchers discovered flaws in The DAO, the largest crowd-funded smart contract in command of $150M, and called for a moratorium until the smart contract can be updated.


Solidus is a cryptocurrency based on blockchains that can be run by a confederation or consortium of trustworthy entities.

Hawk enables privacy-preserving blockchainds and smart contracts by storing encrypted transactions on the blockchain, and relying on cryptography to retain the security of the cryptocurrency.

Bitcoin-Next Generation is a modification to Bitcoin that enables the system to scale to the limits of the network without being hampered by an artificial blocksize limitation. It does not require any modifications to Bitcoin's trust model.

Town Crier provides authenticated data feeds for smart contracts

  • A postdoc position is available in Cornell/CornellTech and Ethereum Foundation Research Group.