By Elena Nadolinski in collaboration with Facu Spagnuolo. Thank you! One of the biggest advantages of Ethereum is that every transaction of moving funds, every contract deployed, and every transaction…
Upgradeability using Unstructured Storage
The examples showed in this post are just for learning purposes, do not use them in production. During the last months we’ve been designing and developing a prototype of the…
Smart Contract Upgradeability using Eternal Storage
As mentioned in our Development Roadmap Part Two, the Kernel is the foundational layer of zeppelin_os, and we will soon be launching a prototype of it, starting with the functionality…
The Parity Wallet Hack Reloaded
Today we witnessed a possible major attack on the Parity MultiSig contract. This follows a previous hack in July. Estimated losses may total over 500,000 ETH ($150 million USD), including over 300,000…
Evolution of Smart Contract Security in the Ethereum Ecosystem
The following is an adaptation of my Devcon3 talk from November 2nd, 2017. Pre-history: The Dark Age In May of 2016, Peter Vessenes analyzed a sample of smart contracts published…