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ASAtlas Systematlas-system.hashnode.devAug 30 · 6 min read

The Interface Looks Trustworthy — But What Does the Smart Contract Say?

A polished Web3 interface can create confidence in seconds. Clean typography, animated dashboards, familiar wallet buttons, and impressive numbers all suggest that a platform is professional. But the

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TMTech Myssteequeaqfatma.hashnode.devJul 5 · 7 min read

Agentic Wallet Prompt Injection: A Minimal Case Study

Title + Metadata Title: When Your AI Agent Reads a Webpage and Sends Your Crypto: A Prompt Injection Case Study Author: Aq Fatma - Blockchain Security ResearcherDate: July 2026Stack: Gemini 2.5 Flash

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DMDishita Malvaniadishitamalvania.hashnode.devMay 21 · 10 min read

From "Code Is Law" to "Spec Is Law": The Security Shift That Could Save DeFi From Itself

The $770 Million Wake-Up Call Something is fundamentally broken in how DeFi handles security. April 2026 was the worst month for crypto exploits on record. Two protocols alone — Kelp DAO (292 million

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BKBill Kunyihabuildwithrust.comMay 1 · 25 min read

Rust Crypto: SHA-256, ECDSA, Keys

When building the cryptography layer for a Bitcoin-style blockchain in Rust, the goal should be a small surface area. Every consensus-critical operation passes through it: transaction IDs, block hashe

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MHMusab Habeebmusab19.hashnode.devApr 16 · 7 min read

A Deep Dive Into the Curve LP Oracle Smart Contract

HeIf you are exploring the world of decentralized finance (DeFi), you have probably realized that accurately pricing assets is one of the hardest challenges developers face. Pricing a standard token i

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FAFavour Ajayefavourajaye.hashnode.devApr 14 · 14 min read

Smart Contract Security Checklist 3️⃣ — (Attacker’s Mindset)

That question is straight from the Solodit Smart Contract Security Checklist. And like most questions on that checklist, it sounds simple enough until you start pulling at the thread. Hello again. Wel

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LLIANPRlianpr.hashnode.devApr 9 · 1 min read

What Is Blockchain? A Comprehensive Guide for Beginners (2026 Edition)

Blockchain is the technological breakthrough powering the future of the decentralized web (Web3). While often associated with Bitcoin, its implications are far more profound. At its core, a blockchain

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RRaghuvanshraghuvansh.hashnode.devApr 6 · 16 min read

I Audited My Own DeFi Protocol —Here's Every Bug I Found (And How I Fixed Them)

"The scariest thing about writing smart contracts isn't that the code is complex. It's that the code looks fine — right until the moment it isn't." Let me set the scene. It's late. You've been writi

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FAFavour Ajayefavourajaye.hashnode.devFeb 22 · 11 min read

Smart Contract Security Checklist 2️⃣(Attacker's Mindset)

What if the person you owe money to can no longer legally receive it, and that one fact breaks your entire protocol? That’s not a hypothetical. It’s a live vulnerability class that has been found in r

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DSDunitech Soft Solutionsdunitech-soft-solutions.hashnode.devFeb 16 · 3 min read

Smart Contract Security: Best Practices Every Founder Should Know

Smart contracts power most Web3 applications, from DeFi platforms to NFT marketplaces. However, a single vulnerability in a smart contract can lead to millions in losses. For founders and businesses entering the blockchain space, security must be a t...

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#blockchain-security

Search Hashnode

#blockchain-security

Explore Hashnode

Trending tags this week

The Interface Looks Trustworthy — But What Does the Smart Contract Say?

Agentic Wallet Prompt Injection: A Minimal Case Study

From "Code Is Law" to "Spec Is Law": The Security Shift That Could Save DeFi From Itself

Rust Crypto: SHA-256, ECDSA, Keys

A Deep Dive Into the Curve LP Oracle Smart Contract

Smart Contract Security Checklist 3️⃣ — (Attacker’s Mindset)

What Is Blockchain? A Comprehensive Guide for Beginners (2026 Edition)

I Audited My Own DeFi Protocol —Here's Every Bug I Found (And How I Fixed Them)

Smart Contract Security Checklist 2️⃣(Attacker's Mindset)

Smart Contract Security: Best Practices Every Founder Should Know