--- title: "#ethereum-security articles | Hashnode" description: "Explore 39 articles tagged #ethereum-security on Hashnode. Tutorials, guides, and how-tos from the community." url: "https://hashnode.com/tag/ethereum-security" --- Tag # #ethereum-security 39 posts · 4 followers [Ady](https://hashnode.com/@adyonchain) · [Jul 11, 2025](https://hashnode.com/posts/understanding-ethereum-what-it-is-and-how-it-functions/6876e1e7d669c31c729b9938) ### [Understanding Ethereum: What it Is and How it Functions](https://fridaylearning.hashnode.dev/understanding-ethereum-what-it-is-and-how-it-functions?utm_source=hashnode&utm_medium=feed) A newcomer’s look into the future 6 min read · [fridaylearning.hashnode.dev](https://fridaylearning.hashnode.dev/understanding-ethereum-what-it-is-and-how-it-functions?utm_source=hashnode&utm_medium=feed) [Camila Watson](https://hashnode.com/@smartcontractaudit) · [Jun 13, 2025](https://hashnode.com/posts/solana-vs-ethereum-2025-who-will-dominate-the-blockchain-space/684bc838fd77ff0e23c8454c) ### [Solana vs Ethereum 2025: Who Will Dominate the Blockchain Space?](https://blockchaindevelopmentusa.hashnode.dev/solana-vs-ethereum-2025-who-will-dominate-the-blockchain-space?utm_source=hashnode&utm_medium=feed) The blockchain industry is gearing up for a transformative 2025, and the two giants—Solana and Ethereum—are at the forefront of this evolution. As more businesses explore decentralized solutions, the debate over "Solana vs Ethereum" has become a foca... 3 min read · [blockchaindevelopmentusa.hashnode.dev](https://blockchaindevelopmentusa.hashnode.dev/solana-vs-ethereum-2025-who-will-dominate-the-blockchain-space?utm_source=hashnode&utm_medium=feed) [hexbyte](https://hashnode.com/@hexbyte) · [Oct 13, 2024](https://hashnode.com/posts/ethernaut-ctf-series-05-token/670c1d8e1f5d63f2857c0297) ### [Ethernaut Series - 05 (Token)](https://blog.hexbyte.in/ethernaut-ctf-series-05-token?utm_source=hashnode&utm_medium=feed) Concept The emphasis of this level is on the concept of overflow and underflow which is a concern for contracts written in solidity version <0.8. Basically, there are different types of integer data type. For example, uint256, int256, uint8, int8. Ea... 2 min read · [blog.hexbyte.in](https://blog.hexbyte.in/ethernaut-ctf-series-05-token?utm_source=hashnode&utm_medium=feed) [hexbyte](https://hashnode.com/@hexbyte) · [Oct 5, 2024](https://hashnode.com/posts/ethernaut-ctf-series-02/6701a470147bbaf3deeebce7) ### [Ethernaut Series - 02 (Fal1out)](https://blog.hexbyte.in/ethernaut-ctf-series-02?utm_source=hashnode&utm_medium=feed) We are asked to claim ownership of a contract whose code is provided as such: // SPDX-License-Identifier: MIT pragma solidity ^0.6.0; import "openzeppelin-contracts-06/math/SafeMath.sol"; contract Fallout { using SafeMath for uint256; mapp... 4 min read · [blog.hexbyte.in](https://blog.hexbyte.in/ethernaut-ctf-series-02?utm_source=hashnode&utm_medium=feed) [OrganicOpz](https://hashnode.com/@organicopz) · [Oct 3, 2024](https://hashnode.com/posts/mastering-smart-contracts-on-ethereum-best-practices/66fe3caca5c5f62eabff94c7) ### [Mastering Smart Contracts on Ethereum: Best Practices](https://blog.organicopz.com/mastering-smart-contracts-on-ethereum-best-practices?utm_source=hashnode&utm_medium=feed) Essential Best Practices for Developing Secure and Efficient Ethereum Smart Contracts 4 min read · [blog.organicopz.com](https://blog.organicopz.com/mastering-smart-contracts-on-ethereum-best-practices?utm_source=hashnode&utm_medium=feed) [Ezequiel Perez](https://hashnode.com/@eperezok) · [Sep 18, 2024](https://hashnode.com/posts/formal-verification-from-programs-to-formulas/66eaf4eb0c3fb10b3f48094a) ### [Formal Verification: From Programs to Formulas](https://eperez.blog/formal-verification-from-programs-to-formulas?utm_source=hashnode&utm_medium=feed) Convert programs to logical formulas and prove properties about them 11 min read · [eperez.blog](https://eperez.blog/formal-verification-from-programs-to-formulas?utm_source=hashnode&utm_medium=feed) [Pierre E.](https://hashnode.com/@Pedrojok) · [Apr 15, 2024](https://hashnode.com/posts/damn-vulnerable-defi-5-the-rewarder/6630b224af996eb1538d24fd) ### [Damn Vulnerable DeFi | 5 - The Rewarder](https://blog.pedrojok.com/damn-vulnerable-defi-5-the-rewarder?utm_source=hashnode&utm_medium=feed) Timing and Technique: Exploiting The Rewarder for Maximum Gain 7 min read · [blog.pedrojok.com](https://blog.pedrojok.com/damn-vulnerable-defi-5-the-rewarder?utm_source=hashnode&utm_medium=feed) [Pierre E.](https://hashnode.com/@Pedrojok) · [Apr 14, 2024](https://hashnode.com/posts/damn-vulnerable-defi-4-side-entrance/662f4539b763ac95280b1ebe) ### [Damn Vulnerable DeFi | 4 - Side Entrance](https://blog.pedrojok.com/damn-vulnerable-defi-4-side-entrance?utm_source=hashnode&utm_medium=feed) A Deep Dive into the Side Entrance Challenge: Mastering the Mechanics of Flash Loans 4 min read · [blog.pedrojok.com](https://blog.pedrojok.com/damn-vulnerable-defi-4-side-entrance?utm_source=hashnode&utm_medium=feed) [Pierre E.](https://hashnode.com/@Pedrojok) · [Apr 13, 2024](https://hashnode.com/posts/damn-vulnerable-defi-3-truster/662ef23230461289239ca56e) ### [Damn Vulnerable DeFi | 3 - Truster](https://blog.pedrojok.com/damn-vulnerable-defi-3-truster?utm_source=hashnode&utm_medium=feed) DeFi Vulnerabilities Exposed: How to Solve the Truster Flash Loan Exploit" 4 min read · [blog.pedrojok.com](https://blog.pedrojok.com/damn-vulnerable-defi-3-truster?utm_source=hashnode&utm_medium=feed) [Pierre E.](https://hashnode.com/@Pedrojok) · [Apr 12, 2024](https://hashnode.com/posts/the-ethernaut-ctf-solutions-31-stake/662b31966348e26f955616d1) ### [The Ethernaut CTF Solutions | 31 - Stake](https://blog.pedrojok.com/the-ethernaut-ctf-solutions-31-stake?utm_source=hashnode&utm_medium=feed) Staking Strategies: An Insightful Journey Through Smart Contract Exploits in DeFi 6 min read · [blog.pedrojok.com](https://blog.pedrojok.com/the-ethernaut-ctf-solutions-31-stake?utm_source=hashnode&utm_medium=feed)