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Bloqarl
@Bloqarl
Enhance Web3 Security | Build On-Chain | Master DeFi | If you share my same goals, I share everything I learn. My Twitter https://twitter.com/TheBlockChainer
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I shared my experience while studying #Web3 #security participating in #SmartContractAudit and going through my #SmartContracts course.
https://www.binance.com/en/feed/post/536771?ref=730857736&utm_campaign=web_share_copy
https://www.binance.com/en/feed/post/536771?ref=730857736&utm_campaign=web_share_copy
Learn how the #Ethereum virtual machine works and save #gasfee in your #SmartContracts with #Solidity #crypto2023
https://www.binance.com/en/feed/post/536346?ref=730857736&utm_campaign=web_share_copy
https://www.binance.com/en/feed/post/536346?ref=730857736&utm_campaign=web_share_copy
#Web3 #security explained. Learn about #SmartContracts and how to avoid reentrancy on them.
https://www.binance.com/en/feed/post/536271?ref=730857736&utm_campaign=web_share_copy
https://www.binance.com/en/feed/post/536271?ref=730857736&utm_campaign=web_share_copy
Want to leave #trading aside and focus on #Ethereum #blockchain and #EVM
Checkout my articles on how to get yourself started.
https://www.binance.com/en/feed/post/536400?ref=730857736&utm_campaign=web_share_copy
https://www.binance.com/en/feed/post/536250?ref=730857736&utm_campaign=web_share_copy
Checkout my articles on how to get yourself started.
https://www.binance.com/en/feed/post/536400?ref=730857736&utm_campaign=web_share_copy
https://www.binance.com/en/feed/post/536250?ref=730857736&utm_campaign=web_share_copy
Studying Web3 security, auditing SC and more. How do I handle this?
I do feel a bit like in that picture, to be honest. These past few days I have started doing my first audit in code4rena and together with the Smart Contract course and my job it’s quite a lot to handle.
Yes, mainly because I did pay for it. But that only helped me take it even more serious.
And then, a week ago I left my “fear” of not being prepared aside and I registered in code4rena, determined to participate in the next auditing contest. And so I did. A couple of days after that, the as
Yes, mainly because I did pay for it. But that only helped me take it even more serious.
And then, a week ago I left my “fear” of not being prepared aside and I registered in code4rena, determined to participate in the next auditing contest. And so I did. A couple of days after that, the as
What is a Reentrancy attack? — Let’s understand them and prevent them.
Firstly, I am going to help you understand in a simple way what is a reentrancy attack and how you can prevent it, and then, I will dive deeper into code examples in order to show where are the vulnerabilities, what would be the attacker code and most importantly I will show you the latest verified methods to protect not only one but all the smart contracts in your project.
Spoiler: If you have already heard about the nonReentrant() modifier, keep reading because you are about to discover a
Firstly, I am going to help you understand in a simple way what is a reentrancy attack and how you can prevent it, and then, I will dive deeper into code examples in order to show where are the vulnerabilities, what would be the attacker code and most importantly I will show you the latest verified methods to protect not only one but all the smart contracts in your project.
Spoiler: If you have already heard about the nonReentrant() modifier, keep reading because you are about to discover a
New in Blockchain? Don’t start by learning Solidity. Learn first about DeFi
When I first discovered Blockchain and started to read about the potential that it has and how much certainly present is going to be a big thing in the near future I wanted to tell everyone about it and I found myself in a situation where I was not even able to explain what it is and what is it applied to.
“Blockchain is the new internet” — I was saying.
Okay, but tell me more about it, sounds interesting
“The internet will be decentralized thanks to this new technology” — I was mentioning
When I first discovered Blockchain and started to read about the potential that it has and how much certainly present is going to be a big thing in the near future I wanted to tell everyone about it and I found myself in a situation where I was not even able to explain what it is and what is it applied to.
“Blockchain is the new internet” — I was saying.
Okay, but tell me more about it, sounds interesting
“The internet will be decentralized thanks to this new technology” — I was mentioning
Solidity Gas Optimization: Understanding how EVM works can save you gas
You might have come across some Solidity tips to improve your code skills in order to save some gas, but, today I want to focus more on how understanding the Ethereum Virtual Machine can effectively save you gas costs on your smart contracts.
Since we are going to dive into Ethereum, I am going to leave here the snippet of its Yellow Paper which specifies the gas costs of the opcodes, and during the article we will be referring to them.
Tip #1: Cold access VS warm access
Gcoldsload: 210
You might have come across some Solidity tips to improve your code skills in order to save some gas, but, today I want to focus more on how understanding the Ethereum Virtual Machine can effectively save you gas costs on your smart contracts.
Since we are going to dive into Ethereum, I am going to leave here the snippet of its Yellow Paper which specifies the gas costs of the opcodes, and during the article we will be referring to them.
Tip #1: Cold access VS warm access
Gcoldsload: 210
How do you even start learning about Blockchain?
To start, let me mention I am a Software Engineer in Test, aka QA. I have been working on testing mobile apps and writing some automated tests for over 7 years.
Now, how does a QA end up involved in the world of Blockchain?
Was it through Bitcoin? or Trading? or any kind of crypto investment? Not even close. I have never been interested or involved in anything related to crypto. And I will tell you more I had never even heard the word Blockchain until the day I caught up with a good old friend
Now, how does a QA end up involved in the world of Blockchain?
Was it through Bitcoin? or Trading? or any kind of crypto investment? Not even close. I have never been interested or involved in anything related to crypto. And I will tell you more I had never even heard the word Blockchain until the day I caught up with a good old friend