Public write-ups on the bugs, patterns, and protocols we audit. Engineer-to-engineer, no fluff.
Gamification in learning often feels hollow. Here's why Zealynx Academy's rank and leaderboard system is different — and why it produces verifiable reputation, not points for points' sake.
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Inside the April 2026 Anthropic MCP SDK design flaw: STDIO transport allows config-to-command-execution across Python, TypeScript, Java, Rust SDKs — by design.
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TheDAO Security Fund awarded the ETHSecurity Badge to Ethereum security contributors. Holders get 4x matching impact in the Ethereum Security QF round, open through May 14, 2026.
ReadGamification in learning often feels hollow. Here's why Zealynx Academy's rank and leaderboard system is different — and why it produces verifiable reputation, not points for points' sake.
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29-point Base L2 audit checklist: block timing exploits, address aliasing, dual gas fees, bridge vulnerabilities, sequencer threats, and fault proof risks.
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Compare Arbitrum, Optimism, and Polygon zkEVM security models. Fraud proofs, ZK validity proofs, upgrade multisigs, and sequencer risks — a data-driven L2 guide.
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Yearn V2 and V3 vault architecture, exploit case studies (yDAI, yUSDT, Cream), and defense patterns every DeFi auditor and integrator must know.
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Compare ERC-3643 and ERC-1400 for RWA compliance. See identity checks, partition tradeoffs, ACT risk, forced transfers, and when each token standard fits.
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Step-by-step guide to building your first Uniswap V4 hook. Learn the essential libraries, contract structure, hook permissions, and critical security considerations for DeFi developers.
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The 2026 security timeline for Web3 protocols: when to audit at design, dev, pre-launch, and post-launch — plus real lead times, audit costs, and launch buffer rules.
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Smart contract audit scoping guide. Seven deliverables auditors need, nSLOC pricing benchmarks, and the Rekt Test — cut your quote 15–30%.
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Audits attest to a commit hash, not protocol safety. Learn how monitoring, invariants, runbooks, and OpSec close the gap — with Euler, Nomad, Ronin, and Radiant case studies.
ReadInside the April 2026 Anthropic MCP SDK design flaw: STDIO transport allows config-to-command-execution across Python, TypeScript, Java, Rust SDKs — by design.
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OWASP ASI04 (Agentic Supply Chain Vulnerabilities) explained: MCP Impersonation, malicious tools, trojanised connectors. Real CVEs, attack patterns, mitigations.
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Complete MCP vulnerability index: 16 disclosed breaches and 14+ CVEs since April 2025 across Anthropic, Cursor, Postmark — with OWASP ASI04 patterns. Updated weekly.
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How flash loans amplify oracle, donation, and reentrancy bugs into $200M+ DeFi exploits — Cetus, Penpie, KyberSwap, UwU Lend case studies plus defenses that hold.
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How attackers exploit DAO governance with flash loans, EVM opcode injection, and quorum exhaustion — plus audit strategies and defense architectures.
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How attackers exploit oracle price feeds in DeFi using flash loans, AMM imbalances, and governance subversion — with defense patterns for protocol architects.
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Most Web3 founders are technical and ship great code, then watch the protocol die to non-code problems. Tokenomics, fundraising, governance, regulatory, GTM — this is what kills teams.
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The 2026 OWASP Smart Contract Top 10 elevated business logic to #2 and added proxy & upgradeability at #10. Here's what changed and how to audit.
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Your complete guide to EthCC 2026 in Cannes. Key dates, side events, networking tips, and how Web3 builders can make the most of the conference.
ReadTheDAO Security Fund awarded the ETHSecurity Badge to Ethereum security contributors. Holders get 4x matching impact in the Ethereum Security QF round, open through May 14, 2026.
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Krait is the Zealynx pre-audit readiness engine. Catch the 12 finding categories that inflate smart contract audit quotes by 30% — locally, free, before booking.
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Shadow audits replay past public security contests on real protocol forks. Learn Web3 security the way top auditors did: reviewing graded contests, fast.
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Web2 casinos hide RTP manipulation. Solana GambleFi uses VRF and Zero-Edge models to make outcomes verifiable. Zealynx auditors explain the security trade-offs.
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Discover how optimization theory, information theory, and graph theory create security vulnerabilities in AI systems. Learn about real-time poisoning attacks, model leakage, graph manipulation, and mathematical attack vectors targeting LLMs and neural networks.
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How LLMs use set theory internally and how attackers exploit its limitations to jailbreak AI models with paradoxical prompts.
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Learn why $3B+ was lost despite audits, how parametric insurance works, and the optimal 70/30 budget split for protocol security in 2026.
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$3.4B lost in 2025: Bybit, Cetus, Balancer breakdowns. Zealynx auditors explain blind signing, supply chain attacks, and how to close audit blind spots.
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How much does a smart contract audit cost in 2026? Most teams pay $5K to $15K for simple tokens, $50K to $100K for standard DeFi, and $150K to $500K+ for complex protocols.
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ERC-1400 security token standard explained: Implement compliant RWA tokenization with partitions, transfer restrictions, and KYC hooks. Complete developer guide for regulated blockchain securities.
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Learn how ERC-7540 extends ERC-4626 to enable asynchronous settlement for Real-World Assets (RWA) vaults. Explore the request/claim pattern, implementation details, and security considerations for tokenizing T+2 settlement assets on Ethereum.
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Discover how smart contract audits impact valuation during technical due diligence. Learn what investors look for in audit reports, which security firms matter, and red flags that kill funding rounds for Web3 startups.
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Smart contract audits cut gas costs, attract investors, and set legal standard of care. Zealynx breaks down the measurable ROI — beyond just avoiding a hack.
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How smart contract security drives sticky TVL in DeFi. Learn the Trust Architecture model, reentrancy patterns, and why audited protocols retain more liquidity — Zealynx.
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Discover how CrossFi bridges traditional finance and DeFi with crypto Visa cards, enabling secure everyday payments while maintaining decentralization and user control over digital assets.
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