Recent Blockchain Sec

Sometime last week, I stumbled across BIP-39 and how it helps secure web3 wallets, I decided to try my hands on a demo. A web3 wallet self-custodial is a software/hardware that allows users keep track of their funds on the Blockchain. It is controll...

MEV attacks happen when someone usually a miner, validator, or bot manipulates the order of pending transactions in Ethereum EVM chains to make extra money This attaclk is done by front-running, back-running, sandwich or liquidation attacks mempoo...

Decentralized File Storage Decentralized file storage refers to systems that use distributed networks of computers nodes to store data securely and redundantly, rather than relying on centralized servers. These systems use blockchain or peer-to-p...

Private variables on EVM blockchains are not really private and hidden Do you think storing important keys and data in private key's are safer on EVM chains. Definition say's all, EVM is an transparent chain Attackers will always looks for deploye...

Oracles: Simple Introduction Oracles are external data providers that bring off-chain data to on-chain smart contracts!!!! DeFi protocols with Liquidity Pools are considered as oracles -> Such as Uniswap, Sushiswap, etc. DeFi protocols, who rely...

EVM compatible, opcodes and calling The EVM basically represents all the instructions a computer needs to be able to read. Any language that can compile down to bytecode with these opcodes is considered EVM compatible' 1. Data in Transactions: ...

Storage layout and array overflow/underflow risks!!!! Solidity stores data in Each slot = 32 bytes 256 bits Each storage slot is numbered: slot 0, slot 1, slot 2 and so on. Solidity tries to pack variables into these slots efficiently, but the ac...

Blockchain Devops Blockchain DevOps involves the application of DevOps principles and practices in the blockchain ecosystem. It focuses on streamlining the development, deployment, testing, and operation of blockchain-based applications or network...

Smart contracts are the backbone of decentralized applications dApps on blockchain platforms like Solana. However, their security is paramount because vulnerabilities in smart contracts can lead to catastrophic financial losses. In this article, we’l...