Six contracts that pass EXTCODESIZE(owner) > 0 and still withdraw their order
On an order book, the depth you see is a promise. The market maker showing you a bid can pull it in the same block you try to take it, and nothing o…
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3 Things I Learned Building a Smart Contract Project with Foundry
When I started building my NFT marketplace in Solidity, my main goal was simple: Make it work. But as the project grew, I realized that writing Soli…
Как выбирать фреймворк для разработки умных контрактов на Solidity для нового проекта?
В этом году стукнуло уже 10 лет, как я разрабатываю умные контракты на Solidity под EVM. В связи с этим решил нап…
Redbelly Network Troubleshooting Guide: 22 Common Developer Errors and Their Fixes
Redbelly Network Troubleshooting Guide 22 common developer errors, with the exact command that fixes each one. Redbelly Network is an EVM-compatible…
Two access-control hacks drained $1.4M this month - the one-line bug, and the check that catches it
In the last few weeks two protocols were drained through the same class of bug: an access-control exploit . RISEx lost ~$673k. WEMIX.FI Lend lost ~$…
5 false positives your Solidity scanner is probably reporting right now
Every automated Solidity security tool has the same disease: it cries wolf. Run one on an audited protocol and you get 600 "findings," 98% of which…
My smart-contract scanner reports almost nothing — and that's the whole point
Most Solidity security tools have the same failure mode: they cry wolf. You run them on an audited protocol and get 600 "findings," 98% of which are…
Function Calling With a Local LLM to Drive Foundry: Fuzz, Read, Repeat
The first time I let a local model drive Foundry unsupervised, it spent eleven turns trying to fix a fuzz test by renaming the test function. Not ch…
Qwen2.5-Coder vs DeepSeek-Coder for Solidity Review: What I Actually See Locally
I keep a folder of ten small Solidity contracts with bugs I planted myself: a classic reentrancy in a withdraw function, a missing access modifier o…
Dev Log 07: Mitigating RPC Latency Desyncs During Polygon Hard Forks
Maintaining real-time transaction tracking layers across a multi-tier infrastructure requires seamless node data synchronization. During heavy netwo…
I ran my Solidity scanner on 6 top-audited DeFi protocols. Every 'critical' was a false positive — here's why.
Most Solidity scanners are high-recall, low-precision. They flag 40 things, 38 are noise, and after the third report you stop reading them — so the…
Dev Log 06: Designing Reentrancy Guards and State Locks in Staking Pools
When building our live core liquidity tiers ( hNobtStaking and BroilerPlusStaking ) on Polygon Mainnet, preventing transaction-ordering dependencies…
I'm Entering My First Sherlock Audit Contest: The Setup, the Plan, the Fear
I have shipped software for 18 years. Roughly 8 of those in crypto. And this week I signed up for my first Sherlock audit contest, and my hands were…
MythX shut down in March and nothing replaced it so I built something
If you were using MythX before March 31st, you already know. ConsenSys quietly sunset the entire MythX suite. One day it was there, the next your CI…
Shipping a Solidity contract to mainnet? Do this 20-minute self-check first
You built something. Tests pass. You're days from mainnet. Before you either skip security entirely (please don't) or spend weeks lining up a full a…
I ran my Solidity scanner across the 10 most-audited codebases in web3. Here's every flag.
The dirty secret of automated smart-contract security tools isn't that they miss bugs. It's that they cry wolf. Point a typical static analyzer at a…
I almost reported a critical bug that didn't exist. One constant saved me.
Last week I was reviewing the staking engine of a protocol before its mainnet launch. Deep in a 1,400-line contract, I found what looked like a seri…
7 ways to drain an ERC-4626 vault (and how a good protocol closes each one)
Based on real audits of production vaults and AMMs. A tokenized vault (ERC-4626) looks simple: deposit assets, get shares; burn shares, get assets b…
I built my first Robinhood Chain app as an index basket
I built a small index basket app on Robinhood Chain because I wanted to understand the developer path from the first contract deploy all the way to…
The Tether Paradox: Shitty ERC-20s, OpenZeppelin, and the Unstoppable Web
I have a confession to make. When I first saw that Tether—the behemoth behind the $110 billion USDT stablecoin—was the primary financial backer of H…
Signature Replay Attacks in Solidity: The Bug That Looks Correct
Some smart contract bugs scream at you. A missing onlyOwner , a reentrancy with the state update after the transfer. Signature replay is not one of…
AgentJobs: Non-Custodial Agent-to-Agent Escrow, Live on Monad
The problem AI agents are starting to hire each other — one agent delegates a sub-task to another, pays for the output, moves on. The blocker isn't…
Front-Running and MEV: Writing Contracts That Don't Leak Money to the Mempool
When you submit a transaction, it sits in the public mempool before it is mined, visible to everyone. Bots watch that mempool and reorder, insert, o…
От Кремниевой долины к техно-фашизму: почему облачные LLM — это ловушка, и как я собрал свой локальный ИИ на коленке
Кремниевая долина строит ИИ как оружие. А мы, разработчики, остаёмся без дешёвого ChatGPT. Я не стал ждать — за пару вечеров настроил локальную LLM…
The Token Is the Least Interesting Part of Tokenization
"Most tokenization discussions stop at the token. In reality, the token is often the simplest component of the entire system." There is a moment tha…
Gas Optimization That Doesn't Break Security: Storage, Calldata, and the Traps
Gas optimization is satisfying. You shave a few thousand gas off a function and feel clever. But some optimizations trade away safety in ways that a…
Reentrancy in 2026: Why It Still Drains Millions (and How AI Spots It)
Reentrancy is the oldest trick in smart contract exploitation. The DAO fell to it in 2016. You would think a bug this famous would be extinct by now…
Access Control Bugs: The #1 Cause of Smart Contract Hacks This Year
Every year the post-mortems pile up, and every year the same category sits at the top of the loss chart. Not reentrancy. Not oracle manipulation. Ac…
Foundry Invariant Testing: Finding Bugs Fuzzing Can't
Your fuzz tests pass. Your unit tests pass. Coverage is green. Then the protocol goes live and someone drains the vault with a five-transaction sequ…
Delayed Ownership on Ethereum: A Different Custody Model
Delayed Ownership on Ethereum: A Different Custody Model Most Ethereum assets assume a simple rule: once a transfer is confirmed, ownership changes…