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Author Profile
Georgi Plamenov
Smart Contract Security Researcher
Georgi Plamenov is a Web3 security researcher specializing in smart contract vulnerability analysis and EVM exploits. He writes deep-dive walkthroughs on complex security challenges—including OpenZeppelin's Ethernaut CTF—breaking down re-entrancy, storage manipulation, and defense-in-depth patterns to help Solidity developers build attack-resistant protocols.
Ethernaut CTFRe-entrancyDenial of ServiceEVM Vulnerability Analysis
5 articles published
Articles by Georgi Plamenov
Ethernaut WalkthroughEthernaut Level 20 Walkthrough: Denial
Ethernaut Level 20: Denial focuses on a vulnerability related to denial-of-service (DoS) attacks. In this article, we’ll break down the Denial contract, identify its vulnerabilities, and explain how the Hack contract eff
Georgi PlamenovJuly 31, 2024Read
Ethernaut WalkthroughEthernaut Level 17 Walkthrough: Recovery
In the Ethernaut level 17 challenge, participants are tasked with finding and recovering Ether from a lost contract. The goal is to understand how contract addresses are derived and how this knowledge can be used to retr
Georgi PlamenovJuly 11, 2024Read
Ethernaut WalkthroughEthernaut Level 16 Walkthrough: Preservation
This article will break down the Ethernaut Level 16: Preservation contract, point out its flaws, and show how the Hack contract takes advantage of these weaknesses. Let’s dive into how delegatecall can be risky by lookin
Georgi PlamenovJuly 6, 2024Read
Ethernaut WalkthroughEthernaut Challenge 13 Walkthrough: Gatekeeper One
TL;DR: Challenge 13: Gatekeeper One, also known as Ethernaut Level 13, stands out because it necessitates a thorough understanding of Ethereum transactions and gas mechanics. This article will delve into the GatekeeperOn
Georgi PlamenovJune 19, 2024Read
Ethernaut WalkthroughEthernaut Level 10 Walkthrough: Re-entrancy
Understanding re-entrancy is crucial for anyone developing or auditing Ethereum smart contracts. Failure to properly handle re-entrant calls can result in the loss of funds or the manipulation of contract state by malici
Georgi PlamenovJune 7, 2024Read
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