Value DeFi MultiStablesVault Exploit

A deep-dive into the vulnerable oracle implementation which lost Value DeFi almost 9 million 3Crv.

Iron-Finance and Time-Weighted-Average-Price Oracles

A first-look at the vulnerability which drove IRON-Finance's TITAN token to zero.

Immutability, Upgradability, and Transparent Proxies

A look at achieving upgradability of contract logic on the immutable blockchain.

Merkle-Damgård Length Extensions and Keccak256

A glance at what it is which makes SHA256 vulnerable to hash length extension, and why Keccak256 is not vulnerable.