To learn hacking and securing smart contract, you need to practice. But unfortunately, there are a sheer number of resources in the web to learn and master the field of web3 security. That’s why I’ve created a website which will help you practice smart contract hacking through multiple challenges. Here…

What (really) happen when you’re sending the transaction bellow with metamask? (Okay, this transaction is from before the London fork, but that doesn’t matter here.) { "from": "0x8900987a0654d979bB7cD8aaADd19Cf032B51D2e", "to": "0xAaBbCcDdEeFf00112233", "value": "2500000000000000000", "gas": 21000, "gasPrice": "50000000000", "nonce": 5 } This transaction is submitted to the blockchain right? Yes, maybe but…

The majority of people criticizing crypto lack basic knowledge crypto. They are: Repeating thoughtlessly opinion of journalists (or others “experts”) and/or reacting emotionally to the recent events. In this article, I’ll share my opinion about the crypto space by going through the different critics. As I have a web2 background…

There isn’t any day when you don’t hear about a new 100s Millions $ hack happening on the blockchain space. Although when it happens, thousands of people loose a chunk of their saving and protocols (or crypto as whole) loose part of their trust. There are still some positive aspects…

Hello, It’s been a bit moth than a month I’ve not written any articles about blockchain and security. Don’t worry, I work on a new crypto project, so I lack the time to write articles. In this article, we will skim through the MEV on the blockchain. Why I’m talking…

In this article, I will explain you why web3 security is actually very easy to learn by comparing it with website security (web2) and pointing out the main differences. What are the main differences between web2 and web3 security? Should you learn web2 or web3 security? …

Did you know that it was possible to create 2 smart contract on different blockchains with the same address? In this article we will see how it’s possible and how to do that. 2 different ways of creating a smart contract. To understand how it’s possible you need to know how addresses are calculated when you deploy a…

In this article, I’ll show you the different steps in how to audit a smart contract. Contrary to beliefs, auditing smart contracts is not that hard. (not harder than auditing simple web2 websites) This is due to the fact that solidity is very easy to learn and is very limited…

There are a lot of regulations going on these times… Maybe you think that: “My ETH is safe, it can’t be frozen” “No one can prevent me from sending a transaction” “No one can steal my ETH, unless they have my private key” But are these statements true ? Is…