security • ctf • smart contracts • ethereum Writeup of Paradigm CTF: Bank February 14, 2021 This is a writeup of the “bank” challenge, which I was the first to solve, from the Ethereum Paradigm CTF. security • ctf • smart contracts • ethereum Writeup of Paradigm CTF: Vault February 9, 2021 I was the first to solve a particularly interesting smart contract challenge in a recent CTF competition. This post explains the vulnerability I found and how to exploit it. firebase • firestore Building a Leaderboard With Firestore: OrderBy and Limit January 14, 2021 Firestore queries can sort and limit the data they retrieve using precomputed indexes. Security rules can limit what types of queries are allowed. More posts
