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The Metana Blog
Guides, tutorials & career tips.
Expert-written guides on Full-Stack Development, Web3, AI, Data, and Cybersecurity — built for aspiring engineers and tech professionals ready to level up.
Smart ContractsFlash Loan Attacks in Smart Contracts
Flash loans, a cornerstone of DeFi (Decentralized Finance), offer exciting liquidity possibilities. But in the wrong hands, they can become a developer’s nightmare – fueling flash loan attacks. These attacks exploit vuln
Metana EditorialJune 27, 2024Read
Smart ContractsGovernance Attacks in Smart Contracts
In the realm of Web3, the concept of decentralization is not just a buzzword—it’s a fundamental principle. Decentralized Autonomous Organizations (DAOs) epitomize this ethos, where token holders collectively make decisio
Metana EditorialJune 26, 2024Read
Smart ContractsExcessive Function Restriction in Smart Contracts
In the world of blockchain and smart contracts, security is paramount. However, there’s a fine line between ensuring security and creating rigid, inflexible systems. One common pitfall in smart contract design is excessi
Metana EditorialJune 25, 2024Read
Smart ContractsInsecure Randomness in Smart Contracts
In the dynamic and evolving landscape of Web3, randomness plays a crucial role in ensuring the fairness and unpredictability of various applications. From provably fair gaming to the generation of unique tokens, the inte
Metana EditorialJune 25, 2024Read
Smart ContractsImproper Input Validation in Smart Contracts
TL;DR In the world of smart contracts, where code governs the execution of transactions and other functions, the importance of proper input validation cannot be overstated. Just like a picky eater, a smart contract shoul
Metana EditorialJune 23, 2024Read
Smart ContractsReentrancy Attack in Smart Contracts
In a traditional transaction, one party sends funds to another in exchange for goods or services. This exchange typically follows a well-defined sequence of steps. However, in the realm of smart contracts, vulnerabilitie
Metana EditorialJune 21, 2024Read
BlockchainHow to Create a Decentralized Exchange (DEX) Using Solidity
TL;DR A Decentralized Exchange (DEX) allows peer-to-peer trading without intermediaries. To build a basic DEX using Solidity, key components include: Steps to build: Enhancements include LP token functionality, oracle in
Metana EditorialApril 22, 2024Read
BlockchainHow to Create a Token with Solidity
Discover how to create an ERC-20 token with Solidity step-by-step—from setting up your environment to writing, testing, and deploying on Ethereum. Whether you’re a beginner or seasoned dev, this guide makes token develop
Metana EditorialApril 19, 2024Read
Smart ContractsSmart Contract Auditing: Essential Guide for Blockchain Security
Smart contracts, the self-executing code on blockchains, have revolutionized various industries. From decentralized finance (DeFi) to supply chain management, their potential is undeniable. However, with great power come
Metana EditorialApril 18, 2024Read
BlockchainEasy Guide to Solidity and IPFS Integration: Improving Blockchain Apps
The world of blockchain technology is full of new and exciting ideas. Blockchains are great because they are very secure and can’t be easily changed, but they don’t have a lot of space to store information. That’s where
Metana EditorialApril 10, 2024Read
BlockchainUnderstanding Chainlink and Solidity Integration for Better dApp Development
Blockchain technology is really innovative, and smart contracts are a big part of that. Smart contracts are like automatic agreements that run themselves, but they have a problem: they can’t interact with the outside wor
Metana EditorialApril 9, 2024Read
BlockchainImplementing Oracles in Solidity: Enhance Contract Reliability
Solidity, the programming language for Ethereum smart contracts, excels at automating tasks and enforcing complex logic within the secure confines of the blockchain. However, smart contracts by themselves operate in a cl
Metana EditorialApril 4, 2024Read
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