Zealynx research
Security Research.
Public write-ups on the bugs, patterns, and protocols we audit. Engineer-to-engineer, no fluff.
48 results for "Ethereum"
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Inside the ETHSecurity Badge: Recognition from TheDAO Fund and What It Means
10 min read
EIP-7702 Security: 5 Delegate Contract Bugs and the Fix for Each
18 min read
Zealynx Academy Is Public: Build, Audit, and Launch Web3 Protocols
20 min read
Base OP Stack Security Audit: 29 Checks EVM Equivalence Hides
23 min read
Layer 2 security under the hood: proof systems, upgrade keys, and what actually protects your funds
17 min read
Agent Payment Security: 20 Checks Before You Ship
14 min read
Code4rena Is Winding Down. Your Audit Plan Is Out of Date
19 min read
How to Prevent Front-Running in ERC20 Smart Contracts
11 min read
Restaking risk: slashing, depegs, and exit queue attacks
25 min read
EIP-7702 wallet security: what auditors check after Pectra
27 min read
Bug Bounty Win: How We Placed Top 5 in the Cyfrin CodeHawks Contest
13 min read
Smart Contract Upgradeability: UUPS vs Transparent vs Beacon
19 min read
Solidity Gas Optimization: Understanding How EVM Works Can Save You Gas
5 min read
Agentic DeFi security: when AI agents control treasury, trading, and liquidations
21 min read
Are Crypto Payments with CrossFi's Visa Card Safe?
9 min read
The Asset You Price Is Not Always the Asset You Release
17 min read
When AI controls DeFi vaults, prompt injection becomes remote code execution
16 min read![EthCC[9] in Cannes: Which Security Tracks Actually Matter for Protocol Teams](/_next/image?url=%2Fpost%2Fethcc-security-guide%2Fcover.png&w=3840&q=75&dpl=dpl_Asr5uYVyRHwC9dSh6bpnMjXT9Ry6)
EthCC[9] in Cannes: Which Security Tracks Actually Matter for Protocol Teams
14 min read
Move vs. Rust vs. Solidity: The Ultimate L1 Blockchain Security Comparison (2026)
12 min read
Smart Contract Audit Cost in 2026, Exact Pricing for Tokens, DeFi, and Bridges
11 min read
ERC-7540 vs ERC-4626: Async Settlement for RWA Vaults
8 min read
The ERC‑20 Pitfall: Why It Doesn't Fit Tokenized Securities and RWA Compliance
8 min read
Building RWA Protocols on EVM: ERC-3643, ERC-7540 Vaults, and the SPV Synchronization Problem
9 min read
Who is Zealynx? Why DeFi teams choose our top-tier smart contract audits
7 min read
Blind Signing: The Bybit $1.5B Lesson in UI Insecurity
9 min read
Gamified Learning in Web3: Why Ranks, Leaderboards, and Lynx Actually Work
11 min read
The Web3 Founder's Survival Guide: Everything No Engineering Curriculum Teaches
16 min read
Flash loan attacks: anatomy of nine-figure DeFi exploits
37 min read
Shadow Audits: How to Learn Web3 Security by Breaking Real Protocol Forks
15 min read
How to Build Uniswap V2 From Scratch (Line by Line, 207 Tests)
18 min read
Post-audit security: why the audit is a commit hash, not a security posture
21 min read
DAO governance attacks: how flash loans and vote manipulation drain treasuries
21 min read
Tokenizing Intellectual Property on EVM: Solidity Patterns for Programmable IP Rights
9 min read
Proxy Security Checklist: 33 Critical Upgradeability Checks
22 min read
What Is Hyperliquid Exchange? Builder Guide to API, SDKs, HyperEVM & Launch Risk
11 min read
What Is Curve Finance? StableSwap, crvUSD, Risks, and Security
38 min read
When Operator Approval Stops Meaning Consent
18 min read
Uniswap v4 hook attacks: 4 exploit patterns with PoCs
25 min read
Hyperliquid Security Checklist for Builders: HyperBFT, HyperCore, HyperEVM
13 min read
How to Build Your Own AI Auditor Agent (Interactive Guide, Multiple Paths)
15 min read
Supply Chain Attacks in Web3 — From NPM to Protocol Exploits
12 min read
OWASP Smart Contract Top 10 2026: changes and audit guide
29 min read
Oracle manipulation in DeFi: how price feeds become attack vectors
12 min read
How to protect your DeFi protocol from MEV: A full-stack defense guide
12 min read
ERC-4337 Smart Accounts: Six Failure Modes We're Already Seeing in Audits
14 min read
From EVM to SVM: A senior security researcher's guide to Solana in 2026
11 min read