--- title: "#blockchain-security articles | Hashnode" description: "Explore 363 articles tagged #blockchain-security on Hashnode. Tutorials, guides, and how-tos from the community." url: "https://hashnode.com/tag/blockchain-security" --- Tag # #blockchain-security 363 posts · 447 followers [Cyber Knight](https://hashnode.com/@cyberknight2479) · [Oct 24](https://hashnode.com/posts/someone-printed-2-7-million-in-crypto-yesterday-then-the-blockchain-got-switched-off/6adc9784de051ff3e731bece) ### [Someone Printed $2.7 Million in Crypto Yesterday — Then the Blockchain Got Switched Off](https://nulltrace.hashnode.dev/someone-printed-2-7-million-in-crypto-yesterday-then-the-blockchain-got-switched-off?utm_source=hashnode&utm_medium=feed) Initia's validators halted the whole network after a Day-0 bug in its MoveVM let an attacker mint tokens out of thin air and bridge them out. The money wasn't stolen. It was created. 4 min read · [nulltrace.hashnode.dev](https://nulltrace.hashnode.dev/someone-printed-2-7-million-in-crypto-yesterday-then-the-blockchain-got-switched-off?utm_source=hashnode&utm_medium=feed) [Atlas System](https://hashnode.com/@atlassystemtech) · [Aug 30](https://hashnode.com/posts/the-interface-looks-trustworthy-but-what-does-the-smart-contract-say/6a9418f06178fc252985ae04) ### [The Interface Looks Trustworthy — But What Does the Smart Contract Say?](https://atlas-system.hashnode.dev/the-interface-looks-trustworthy-but-what-does-the-smart-contract-say?utm_source=hashnode&utm_medium=feed) Learn how to verify smart contracts, wallet permissions, and on-chain activity before trusting a Web3 platform. 6 min read · [atlas-system.hashnode.dev](https://atlas-system.hashnode.dev/the-interface-looks-trustworthy-but-what-does-the-smart-contract-say?utm_source=hashnode&utm_medium=feed) [Tech Myssteeque](https://hashnode.com/@AqFatma) · [Jul 5](https://hashnode.com/posts/agentic-wallet-prompt-injection-a-minimal-case-study/6a4a36ad956817556e0fbe37) ### [Agentic Wallet Prompt Injection: A Minimal Case Study](https://aqfatma.hashnode.dev/agentic-wallet-prompt-injection-a-minimal-case-study?utm_source=hashnode&utm_medium=feed) A case study exploring an Agentic wallet that is vulnerable to prompt injection from an external malicious user's input,putting the wallet at a risk of loss of funds. 7 min read · [aqfatma.hashnode.dev](https://aqfatma.hashnode.dev/agentic-wallet-prompt-injection-a-minimal-case-study?utm_source=hashnode&utm_medium=feed) [Dishita Malvania](https://hashnode.com/@dishitamalvania) · [May 21](https://hashnode.com/posts/from-code-is-law-to-spec-is-law-the-security-shift-that-could-save-defi-from-itself/6a0f4b17d8e265f60d43fb3f) ### [From "Code Is Law" to "Spec Is Law": The Security Shift That Could Save DeFi From Itself](https://dishitamalvania.hashnode.dev/from-code-is-law-to-spec-is-law-the-security-shift-that-could-save-defi-from-itself?utm_source=hashnode&utm_medium=feed) DeFi lost $770M to hacks in early 2026. "Spec is law" enforces safety rules at runtime, reverting exploits before they execute. Here is how it works. 10 min read · [dishitamalvania.hashnode.dev](https://dishitamalvania.hashnode.dev/from-code-is-law-to-spec-is-law-the-security-shift-that-could-save-defi-from-itself?utm_source=hashnode&utm_medium=feed) [Bill Kunyiha](https://hashnode.com/@bkunyiha) · [May 1](https://hashnode.com/posts/rust-crypto-sha-256-ecdsa-keys/69f3ff94909e64ad0756ba53) ### [Rust Crypto: SHA-256, ECDSA, Keys](https://buildwithrust.com/rust-crypto-sha-256-ecdsa-keys?utm_source=hashnode&utm_medium=feed) The cryptographic primitives behind every blockchain transaction 25 min read · [buildwithrust.com](https://buildwithrust.com/rust-crypto-sha-256-ecdsa-keys?utm_source=hashnode&utm_medium=feed) [Musab Habeeb](https://hashnode.com/@Musab19) · [Apr 16](https://hashnode.com/posts/a-deep-dive-into-the-curve-lp-oracle-smart-contract/69e12460ffbb787634e3c62f) ### [A Deep Dive Into the Curve LP Oracle Smart Contract](https://musab19.hashnode.dev/a-deep-dive-into-the-curve-lp-oracle-smart-contract?utm_source=hashnode&utm_medium=feed) Learn how CurveLPOracle.sol securely prices Curve LP tokens using conservative math, bit-packed storage, and read-only reentrancy protection. 7 min read · [musab19.hashnode.dev](https://musab19.hashnode.dev/a-deep-dive-into-the-curve-lp-oracle-smart-contract?utm_source=hashnode&utm_medium=feed) [Favour Ajaye](https://hashnode.com/@blockchaindeveloper) · [Apr 14](https://hashnode.com/posts/smart-contract-security-checklist-3-attacker-s-mindset/69ddca67217f5dfcbd9150ab) ### [Smart Contract Security Checklist 3️⃣ — (Attacker’s Mindset)](https://favourajaye.hashnode.dev/smart-contract-security-checklist-3-attacker-s-mindset?utm_source=hashnode&utm_medium=feed) Question: Can forcing the protocol to process a queue lead to DOS? 14 min read · [favourajaye.hashnode.dev](https://favourajaye.hashnode.dev/smart-contract-security-checklist-3-attacker-s-mindset?utm_source=hashnode&utm_medium=feed) [LIANPR](https://hashnode.com/@lianpr) · [Apr 9](https://hashnode.com/posts/what-is-blockchain-a-comprehensive-guide-for-beginners-2026-edition/69d756f9fa7251682e5dc97a) ### [What Is Blockchain? A Comprehensive Guide for Beginners (2026 Edition)](https://lianpr.hashnode.dev/what-is-blockchain-a-comprehensive-guide-for-beginners-2026-edition?utm_source=hashnode&utm_medium=feed) What Is Blockchain? A Comprehensive Guide for Beginners (2026 Edition) 1 min read · [lianpr.hashnode.dev](https://lianpr.hashnode.dev/what-is-blockchain-a-comprehensive-guide-for-beginners-2026-edition?utm_source=hashnode&utm_medium=feed) [Raghuvansh](https://hashnode.com/@raghuvansh) · [Apr 6](https://hashnode.com/posts/i-audited-my-own-defi-protocol-here-s-every-bug-i-found-and-how-i-fixed-them/69d429ff40c9cabf44953fd3) ### [I Audited My Own DeFi Protocol —Here's Every Bug I Found (And How I Fixed Them)](https://raghuvansh.hashnode.dev/i-audited-my-own-defi-protocol-here-s-every-bug-i-found-and-how-i-fixed-them?utm_source=hashnode&utm_medium=feed) I ran Slither, Aderyn, fuzz and invariant tests on my stablecoin4 findings, every severity, every fix. 16 min read · [raghuvansh.hashnode.dev](https://raghuvansh.hashnode.dev/i-audited-my-own-defi-protocol-here-s-every-bug-i-found-and-how-i-fixed-them?utm_source=hashnode&utm_medium=feed) [Favour Ajaye](https://hashnode.com/@blockchaindeveloper) · [Feb 22](https://hashnode.com/posts/smart-contract-security-checklist-2-attacker-s-mindset/699b75e38dabaa365a62bb81) ### [Smart Contract Security Checklist 2️⃣(Attacker's Mindset)](https://favourajaye.hashnode.dev/smart-contract-security-checklist-2-attacker-s-mindset?utm_source=hashnode&utm_medium=feed) When Being "Trusted" Kills the Protocol: How Token Blacklists Can Hold Your Users Hostage 11 min read · [favourajaye.hashnode.dev](https://favourajaye.hashnode.dev/smart-contract-security-checklist-2-attacker-s-mindset?utm_source=hashnode&utm_medium=feed)