Pure vs. View functions in Solidity, Do you know what is the difference? Does the following code compiles? 👀

Alert: 2 days ago, they started it. m4rio made an announcement. But they persisted and even expanded from Gitcoin Foundation to Lido. The targets: Open source developers Attack: Phishing Process: You will be led to connect your wallet. stay safu

The fastest way to get from junior to senior web3 security researcher is to build out your portfolio however, there's a huge difference between 100 audits of no-name AI agents, NFT marketplaces, uniV2 forks, etc. and, stacking team audits for tier-1 projects and scoring well

Want to be a smart contract auditor? Stop reading random articles and start solving CTFs. Learn by doing. 🔥 Damn Vulnerable DeFi 🔥 Ethernaut 🔥 Paradigm

Day 7 of Foundry Advanced 🚀 with Cyfrin Updraft 🟩 ✅ Test the NFT Smart Contract ✅ Interact with a smart contract ✅ Deploy Your NFTs on a Testnet 💡 Pro tip: To compare strings use: keccak256(abi.encodePacked(expectedName)) == keccak256(abi.encodePacked(actualName))

Another great piece of advice for those starting smart contract auditing!

Day 8 of Foundry Advanced 🚀 with Cyfrin Updraft 🟩 ✅ IPFS and Pinata vs HTTP vs on chain SVGs ✅ What is an SVG? ✅ Create a Dynamic NFT Collection ✅ Encoding SVGs to be Stored On-chain 💡 Pro tip: Use Pinata to store NFT metadata on IPFS or base64 encoded JSON to store it

1. Don’t verify calldata 2. Lose $11M

Just listened to the Y Combinator podcast with jesse.base.eth , here are my biggest takeaways 👇 🪙 We are in crypto’s golden age: 🔹Chains are fast & cheap 🔹Regulatory clarity is here (Genius Act ✅) 🔹Stablecoins = programmable dollars for the world 🔹Wallet UX finally simple

👉 Concatenate different data types with abi.encodePacked 👇 address myAddress = 0xBA401CdaC1A3b6AEeDe21c9C4a483be6C29F88C5; bytes memory result = abi.encodePacked("Hello", uint256(123), myAddress); The result is:

💥 REMINDER: FTX WILL REFUND $1.6 BILLION TO CREDITORS ON SEPTEMBER 30 BILLIONS OF LIQUIDITY IS COMING! 🚀

Day 9 of Foundry Advanced 🚀 with Cyfrin Updraft 🟩 ✅ Modify the NFT Image On-chain ✅ Create the Deployment Script ✅ Debug Your Smart Contract 💡 Pro tip: Use console.log in Foundry to print in the console when debugging

All EVM opcodes in one diagram by ⚙️ LearnEVM.com

❌ require with strings is less efficient in Solidity ✅ revert + custom error saves gas ⛽ That’s because the string (e.g. "Sender is not owner!") is stored on-chain and costs more gas. 👇

Applying for security roles? If your CV doesn’t link to your security profiles (Code4rena, Sherlock, Cantina, Immunefi..), you’re basically invisible. - Add your leaderboard ranks - Share key findings & POCs - Drop profile links right in your CV header Your ranks, reports, and

🎵 Come with me and you'll be in a world of pure regeneration 🎶

Day 10 of Foundry Advanced 🚀 with Cyfrin Updraft 🟩 ✅ Deploy and Interact Using Anvil ✅ Introduction to Filecoin and Arweave ✅ Advanced EVM - Opcodes, calling, etc 💡 Pro tip: evm.codes contains all the EVM opcodes

⚠️ Scam Journal #3 – Running other people’s code Beware of people who ask you to run their code on LinkedIn or X. Often, the package.json hides a malicious NPM package 🚨 👉 It can execute arbitrary code on your computer. 📌 Reminder: 🚫 Never run unknown repos locally 🔍