Beyond onlyOwner: Fixing Logic Vulnerabilities in DeFi (A RetoSwap Case Study)
Logic vulnerabilities are often the most dangerous bugs in DeFi. Unlike reentrancy or overflow errors, they don't always trigger standard static analysis tools. They hide in plain sight, disguised as "intended functionality." In this article, I want to share a recent security assessment I performed, where a critical logic flaw could have allowed an attacker to drain the entire vault.The Anatomy of the Bug: The "Arbiter" Flaw In the original implementation of the RetoSwap vault, the logic for ...
Beyond onlyOwner: Fixing Logic Vulnerabilities in DeFi (A RetoSwap Case Study)
Logic vulnerabilities are often the most dangerous bugs in DeFi. Unlike reentrancy or overflow errors, they don't always trigger standard static analysis tools. They hide in plain sight, disguised as "intended functionality." In this article, I want to share a recent security assessment I performed, where a critical logic flaw could have allowed an attacker to drain the entire vault.The Anatomy of the Bug: The "Arbiter" Flaw In the original implementation of the RetoSwap vault, the logic for ...
Build Your Own Solana Whale Tracker: A Step-by-Step Guide
Tracking smart money and "whale" activity on Solana can feel like searching for a needle in a haystack. While there are many paid tools, building your own lightweight monitor is not only a great way to learn Web3 development but also gives you full control over your data. In this post, I’ll show you how I built a Solana Transaction Monitor using Python, aiogram for Telegram alerts, and solana/solders for blockchain interaction. Why Build This? Solana is incredibly fast, and manual monitoring ...
Build Your Own Solana Whale Tracker: A Step-by-Step Guide
Tracking smart money and "whale" activity on Solana can feel like searching for a needle in a haystack. While there are many paid tools, building your own lightweight monitor is not only a great way to learn Web3 development but also gives you full control over your data. In this post, I’ll show you how I built a Solana Transaction Monitor using Python, aiogram for Telegram alerts, and solana/solders for blockchain interaction. Why Build This? Solana is incredibly fast, and manual monitoring ...
Building a Lightweight Crypto Trading Monitor: From Idea to Open Source
Ever felt like you’re missing the perfect entry point because you can't stare at the charts 24/7? That was me. Instead of burning out by watching 1-minute candles all day, I decided to build a simple, efficient tool to do the heavy lifting for me. Today, I’m sharing how I built a real-time BTC/USDT monitor that runs on a VPS and sends smart alerts directly to my Telegram. 🚀 What’s Under the Hood? I wanted something lightweight that wouldn't consume my server's RAM or spam my phone every seco...
Building a Lightweight Crypto Trading Monitor: From Idea to Open Source
Ever felt like you’re missing the perfect entry point because you can't stare at the charts 24/7? That was me. Instead of burning out by watching 1-minute candles all day, I decided to build a simple, efficient tool to do the heavy lifting for me. Today, I’m sharing how I built a real-time BTC/USDT monitor that runs on a VPS and sends smart alerts directly to my Telegram. 🚀 What’s Under the Hood? I wanted something lightweight that wouldn't consume my server's RAM or spam my phone every seco...
How We Built a High-Speed Solana Sniper Bot for Pump.fun (Jito Integration)
[Introduction] Trading on Solana is the "Wild West." When a new token launches on Pump.fun, you have mere milliseconds to buy it before the price skyrockets. In this article, I’ll share how we built our own sniper bot, grappled with RPC issues, completely overhauled our architecture, and implemented Jito MEV to ensure guaranteed transaction execution. [Problem] Initially, our bot operated as a standard client: It sent transactions via a public RPC. I was waiting for confirmation in the mempoo...
How We Built a High-Speed Solana Sniper Bot for Pump.fun (Jito Integration)
[Introduction] Trading on Solana is the "Wild West." When a new token launches on Pump.fun, you have mere milliseconds to buy it before the price skyrockets. In this article, I’ll share how we built our own sniper bot, grappled with RPC issues, completely overhauled our architecture, and implemented Jito MEV to ensure guaranteed transaction execution. [Problem] Initially, our bot operated as a standard client: It sent transactions via a public RPC. I was waiting for confirmation in the mempoo...
Building a Resilient Solana Trading Bot: Handling Multi-Token Tracking Parallelism and RPC Rate-Limits
Every developer who tries to build a Solana sniper bot for Pump.fun or Raydium eventually hits the same frustrating wall. You write a simple script that listens to new pools, catches a token, buys it, and then enters a loop to check the price for Take-Profit or Stop-Loss targets. It looks great in theory. But in reality, while your bot is sleeping (await sleep(2000)) inside that price-match loop, it is completely blind. It misses dozens of other profitable tokens launching at that exact same ...
Building a Resilient Solana Trading Bot: Handling Multi-Token Tracking Parallelism and RPC Rate-Limits
Every developer who tries to build a Solana sniper bot for Pump.fun or Raydium eventually hits the same frustrating wall. You write a simple script that listens to new pools, catches a token, buys it, and then enters a loop to check the price for Take-Profit or Stop-Loss targets. It looks great in theory. But in reality, while your bot is sleeping (await sleep(2000)) inside that price-match loop, it is completely blind. It misses dozens of other profitable tokens launching at that exact same ...
dog
Игривые кот и собака гоняются друг за другом по полю с высокой травой, их шерсть треплет легкий ветерок.
dog
Игривые кот и собака гоняются друг за другом по полю с высокой травой, их шерсть треплет легкий ветерок.
