Zealynx research
Security Research.
Public write-ups on the bugs, patterns, and protocols we audit. Engineer-to-engineer, no fluff.
48 results for "Solidity"
Clear search Search.
Overflow & Underflow in Solidity: Real Audit Findings, Code Examples & Practice Exercise
19 min read
Inline Assembly Gas Tricks: Hashing, Loops & Storage Writes That Save 30%+ in Solidity
5 min read
Solidity Gas Optimization: Understanding How EVM Works Can Save You Gas
5 min read
Reentrancy Attacks in Solidity — Understand Them and Prevent Them
11 min read
Move vs. Rust vs. Solidity: The Ultimate L1 Blockchain Security Comparison (2026)
12 min read
Write a Custom Aderyn Detector in Rust: Catch Division-Before-Multiplication Bugs in Solidity
8 min read
Phishing Attack in Web3: Why You Should Never Use tx.origin
6 min read
Tokenizing Intellectual Property on EVM: Solidity Patterns for Programmable IP Rights
9 min read
EIP-7702 Security: 5 Delegate Contract Bugs and the Fix for Each
18 min read
GENIUS Act Stablecoin Security: 5 Things Your Contract Must Get Right
16 min read
ERC-4626 inflation attack: how it works and how to stop it
20 min read
Uniswap V2 Code Deep Dive: Router, Factory, Pair & Security Risks
11 min read
Uniswap V2 Router Explained — addLiquidity Line by Line
10 min read
Liquity Protocol — DeFi Protocol Explained from Its Smart Contracts (Part 1)
Liquity Protocol · Part 1 of 2
Real-Life Denial of Service Attacks on Smart Contracts
10 min read
How to Build Uniswap V2 From Scratch (Line by Line, 207 Tests)
18 min read
Flash loan attacks: anatomy of nine-figure DeFi exploits
37 min read
Implement Uniswap v4 swaps & avoid critical mistakes
13 min read
EIP-7702 wallet security: what auditors check after Pectra
26 min read
Smart Contract Upgradeability: UUPS vs Transparent vs Beacon
19 min read
ERC-20 Transfers Need Three Proofs, Not One
16 min read
Beyond Static Checklists: A Defense‑in‑Depth Workflow for Smarter Smart Contract Audits
8 min read
Liquity Protocol — Stability Pool, Liquidations & Redemptions (Part 2)
Liquity Protocol · Part 2 of 2
Floor Is Not Truncation: The Uniswap V3 TickBitmap
Uniswap V3 · Part 5 of 9
DAO governance attacks: how flash loans and vote manipulation drain treasuries
21 min read
When Operator Approval Stops Meaning Consent
18 min read
When a Safe View Becomes an Unsafe Settlement Input
14 min read
Fee Growth Outside: The Uniswap V3 Trick Nobody Explains Well
Uniswap V3 · Part 4 of 9
Uniswap V3 Does Not Store the Price
Uniswap V3 · Part 2 of 9
How to Prevent Front-Running in ERC20 Smart Contracts
11 min read
Who Eats the Wei: Rounding as a Security Boundary in Uniswap V3
Uniswap V3 · Part 3 of 9
Uniswap v4 hook attacks: 4 exploit patterns with PoCs
25 min read
Zealynx Academy vs Cyfrin Updraft, Alchemy University, and LearnWeb3: Honest Comparison
13 min read
OWASP Smart Contract Top 10 2026: changes and audit guide
29 min read
ERC-4337 Smart Accounts: Six Failure Modes We're Already Seeing in Audits
14 min read
Uniswap’s Q64.96 Explained: Essential Security Tips for Hook Developers
11 min read
Bug Bounty Win: How We Placed Top 5 in the Cyfrin CodeHawks Contest
13 min read
Auditing a Live Protocol: Lessons from the Juicebox Buyback Delegate Security Review
7 min read
Aave V3 Pool.sol Deep Dive: Supply, Borrow & Withdraw Logic Every Auditor Must Know
8 min read
How to Build Compound V2 From Scratch (18 Sections, Line by Line)
13 min read
Introducing Your First 90 Days in Web3: A Free, Guided Path to Actually Understand the Space
16 min read
Agentic DeFi security: when AI agents control treasury, trading, and liquidations
21 min read
How to Scope a Smart Contract Audit: What Auditors Need
23 min read
Zealynx Academy Is Public: Build, Audit, and Launch Web3 Protocols
20 min read
When AI controls DeFi vaults, prompt injection becomes remote code execution
16 min read
Cut Your Audit Cost by 30%: The Pre-Audit Prep Checklist for Protocol Teams
11 min read