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Zealynx research

Security Research.

Public write-ups on the bugs, patterns, and protocols we audit. Engineer-to-engineer, no fluff.

48 results for "Blockchain"

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The $43 Billion Identity Theft Problem: How Blockchain Could Protect Your Wealth
IndustryJul 29, 2024

The $43 Billion Identity Theft Problem: How Blockchain Could Protect Your Wealth

4 min read
Move vs. Rust vs. Solidity: The Ultimate L1 Blockchain Security Comparison (2026)
Smart contractsJan 23

Move vs. Rust vs. Solidity: The Ultimate L1 Blockchain Security Comparison (2026)

12 min read
AI trading bot security: 5 critical attack vectors in DeFi
AI securityMar 30

AI trading bot security: 5 critical attack vectors in DeFi

21 min read
Are Crypto Payments with CrossFi's Visa Card Safe?
IndustryDec 19, 2025

Are Crypto Payments with CrossFi's Visa Card Safe?

9 min read
Why AI Penetration Testing Is Now Critical in Web3 Security
AI securityJun 6, 2025

Why AI Penetration Testing Is Now Critical in Web3 Security

7 min read
Fuzzing + Formal Verification: Two Layers That Catch What Manual Audits Miss
Smart contractsFeb 21, 2024

Fuzzing + Formal Verification: Two Layers That Catch What Manual Audits Miss

16 min read
Blind Signing: The Bybit $1.5B Lesson in UI Insecurity
AI securityJul 7

Blind Signing: The Bybit $1.5B Lesson in UI Insecurity

9 min read
Why TypeScript Audits Are Critical for Web3 Security & DeFi dApp Protection
AI securitySep 10, 2025

Why TypeScript Audits Are Critical for Web3 Security & DeFi dApp Protection

5 min read
Building RWA Protocols on EVM: ERC-3643, ERC-7540 Vaults, and the SPV Synchronization Problem
DeFi analysisDec 12, 2025

Building RWA Protocols on EVM: ERC-3643, ERC-7540 Vaults, and the SPV Synchronization Problem

9 min read
2025 DeFi Hacks: $3.4B Exploit Lessons You Must Know
IndustryJan 10

2025 DeFi Hacks: $3.4B Exploit Lessons You Must Know

8 min read
ERC-1400 Explained: Security Token Standard for RWA
Smart contractsJan 5

ERC-1400 Explained: Security Token Standard for RWA

9 min read
The ERC‑20 Pitfall: Why It Doesn't Fit Tokenized Securities and RWA Compliance
DeFi analysisDec 18, 2025

The ERC‑20 Pitfall: Why It Doesn't Fit Tokenized Securities and RWA Compliance

8 min read
What Is Hyperliquid Exchange? Builder Guide to API, SDKs, HyperEVM & Launch Risk
IndustryNov 2025 · Updated Jun 2026

What Is Hyperliquid Exchange? Builder Guide to API, SDKs, HyperEVM & Launch Risk

11 min read
AMM Security Foundations: Master DeFi Trading Risks
DeFi analysisSep 22, 2025

AMM Security Foundations: Master DeFi Trading Risks

AMM Security Deep Dive · Part 1 of 2
DAO governance attacks: how flash loans and vote manipulation drain treasuries
Attack vectorsMar 23

DAO governance attacks: how flash loans and vote manipulation drain treasuries

21 min read
The Weakest Link in DeFi Isn't the Smart Contract — It's the Web App
AI securityFeb 28

The Weakest Link in DeFi Isn't the Smart Contract — It's the Web App

15 min read
ERC-3643 vs ERC-1400 for RWA Compliance
DeFi analysisFeb 22

ERC-3643 vs ERC-1400 for RWA Compliance

9 min read
When Web2 Infrastructure Breaks DeFi: The Hidden Attack Surface
AI securityFeb 16

When Web2 Infrastructure Breaks DeFi: The Hidden Attack Surface

13 min read
Bug Bounty Win: How We Placed Top 5 in the Cyfrin CodeHawks Contest
NewsApr 30, 2024

Bug Bounty Win: How We Placed Top 5 in the Cyfrin CodeHawks Contest

13 min read
Why Fuzz Testing Catches Bugs That Unit Tests Miss: Foundry Invariant Testing for DeFi
Smart contractsApr 17, 2024

Why Fuzz Testing Catches Bugs That Unit Tests Miss: Foundry Invariant Testing for DeFi

11 min read
Code4rena Is Winding Down. Your Audit Plan Is Out of Date
Audit opsNov 6

Code4rena Is Winding Down. Your Audit Plan Is Out of Date

19 min read
When LLMs Sign Transactions: AI-Driven Smart Contract Threat Model
AI securityJul 10

When LLMs Sign Transactions: AI-Driven Smart Contract Threat Model

15 min read
New to Web3? The Exact 90-Day Path We'd Give a Complete Beginner
NewsJul 1

New to Web3? The Exact 90-Day Path We'd Give a Complete Beginner

14 min read
OWASP Smart Contract Top 10 2026: changes and audit guide
IndustryMay 4

OWASP Smart Contract Top 10 2026: changes and audit guide

29 min read
How to Scope a Smart Contract Audit: What Auditors Need
Audit opsApr 23

How to Scope a Smart Contract Audit: What Auditors Need

23 min read
Oracle manipulation in DeFi: how price feeds become attack vectors
Attack vectorsMar 18

Oracle manipulation in DeFi: how price feeds become attack vectors

12 min read
Beyond Static Checklists: A Defense‑in‑Depth Workflow for Smarter Smart Contract Audits
Audit opsFeb 17

Beyond Static Checklists: A Defense‑in‑Depth Workflow for Smarter Smart Contract Audits

8 min read
GameFi Security Checklist: 55+ Critical P2E Exploit Checks
Smart contractsFeb 14

GameFi Security Checklist: 55+ Critical P2E Exploit Checks

20 min read
Audit vs DeFi Insurance: Which Secures Your Protocol Better?
Audit opsJan 15

Audit vs DeFi Insurance: Which Secures Your Protocol Better?

10 min read
Smart Contract Audit Cost in 2026, Exact Pricing for Tokens, DeFi, and Bridges
Audit opsJan 2026 · Updated May 2026

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
DeFi analysisJan 2

ERC-7540 vs ERC-4626: Async Settlement for RWA Vaults

8 min read
Why Audited DeFi Protocols Retain More TVL: The Trust Architecture Model
Smart contractsDec 20, 2025

Why Audited DeFi Protocols Retain More TVL: The Trust Architecture Model

8 min read
How to Prevent Front-Running in ERC20 Smart Contracts
Attack vectorsMay 21, 2024

How to Prevent Front-Running in ERC20 Smart Contracts

11 min read
AI Agents Holding Crypto Wallets: The Security Model
AI securityJul 3

AI Agents Holding Crypto Wallets: The Security Model

15 min read
Agentic DeFi security: when AI agents control treasury, trading, and liquidations
AI securityJun 1

Agentic DeFi security: when AI agents control treasury, trading, and liquidations

21 min read
Flash loan attacks: anatomy of nine-figure DeFi exploits
Attack vectorsApr 29

Flash loan attacks: anatomy of nine-figure DeFi exploits

37 min read
Base OP Stack Security Audit: 29 Checks EVM Equivalence Hides
Smart contractsApr 13

Base OP Stack Security Audit: 29 Checks EVM Equivalence Hides

23 min read
When AI controls DeFi vaults, prompt injection becomes remote code execution
AI securityMar 25

When AI controls DeFi vaults, prompt injection becomes remote code execution

16 min read
ERC-4337 Smart Accounts: Six Failure Modes We're Already Seeing in Audits
Smart contractsMar 12

ERC-4337 Smart Accounts: Six Failure Modes We're Already Seeing in Audits

14 min read
HyperCore vs HyperEVM: How Hyperliquid Architecture Works
DeFi analysisJan 2026 · Updated Sep 2026

HyperCore vs HyperEVM: How Hyperliquid Architecture Works

19 min read
Bridge Security Checklist: 100+ Critical Exploit Checks
Smart contractsJan 26

Bridge Security Checklist: 100+ Critical Exploit Checks

21 min read
Who is Zealynx? Why DeFi teams choose our top-tier smart contract audits
NewsSep 2025 · Updated Apr 2026

Who is Zealynx? Why DeFi teams choose our top-tier smart contract audits

7 min read
Cut Your Audit Cost by 30%: The Pre-Audit Prep Checklist for Protocol Teams
Audit opsFeb 20, 2024

Cut Your Audit Cost by 30%: The Pre-Audit Prep Checklist for Protocol Teams

11 min read
Phishing Attack in Web3: Why You Should Never Use tx.origin
Attack vectorsMar 7, 2023

Phishing Attack in Web3: Why You Should Never Use tx.origin

6 min read
Solidity Gas Optimization: Understanding How EVM Works Can Save You Gas
Smart contractsMar 1, 2023

Solidity Gas Optimization: Understanding How EVM Works Can Save You Gas

5 min read
A Price From the Future Cost $23.75M: 5 RWA Launch Checks
Smart contractsOct 31

A Price From the Future Cost $23.75M: 5 RWA Launch Checks

16 min read
A $292M Bridge Hack, One Verifier: 5 Checks Before Launch
Smart contractsOct 28

A $292M Bridge Hack, One Verifier: 5 Checks Before Launch

17 min read
EIP-7702 Security: 5 Delegate Contract Bugs and the Fix for Each
Smart contractsOct 25

EIP-7702 Security: 5 Delegate Contract Bugs and the Fix for Each

18 min read