AAAiyedogbon Abrahaminfreecodecamp.org·Jun 4 · 26 min readHow Attribute-Based Access Control Helps You Write Better Authorization RulesEvery application that handles user data eventually hits the same problem: not all users should see the same things. A junior nurse should not be able to access every patient record in the hospital. A00
FAFavour Ajayeinfavourajaye.hashnode.dev·May 13 · 27 min readAnatomy of a Preventable Drain: What the Wasabi Protocol Exploit Teaches DeFi About Admin Key Security, Governance Architecture, and Operational Discipline Introduction On April 30, 2026, Wasabi Protocol lost $5.9 million across Ethereum, Base, Berachain, and Blast in under three minutes. The attacker did not exploit a bug in the smart contract code. The00
Kkristofprzybylakincyber-hunter.hashnode.dev·May 12 · 3 min readHow a Voucher Validation Flaw Led to More Than €10,000 in CreditThe Discovery The platform offered newly registered users a welcome voucher that could be redeemed for credit. At first glance, the implementation appeared secure. Manually modifying the visible vouch00
MBMouhamed Ben Abdallahinerinmin-writeups.hashnode.dev·May 12 · 8 min readUnprotected Admin FunctionalityPlatform: PortSwigger Web Security Academy Category: Access Control / Vertical Privilege Escalation Difficulty: Apprentice Tool(s): Browser only Date: 12/05/2026 Overview This lab demonstrates a ver00
Oosint78inshemkar.hashnode.dev·Apr 26 · 6 min readOne Extra JSON Key: How a Harmless Profile Endpoint Became an ATO CandidateThe harmless profile endpoint that taught me how real bugs work Early in my bug bounty journey, I found a bug that looked simple from the outside, but it changed the way I think about web security. At00
BDBolaji Daniel - D4N0inthisisd4n0.hashnode.dev·Apr 13 · 6 min readOWASP Top 10 for DeFi – Access Control Vulnerabilities (SC01:2026)Introduction As part of my ongoing Web3 security journey, I’ve started studying the OWASP Top 10 for DeFi, beginning with one of the most critical categories: Access Control Vulnerabilities. Access co00
BDBolaji Daniel - D4N0inthisisd4n0.hashnode.dev·Apr 13 · 6 min readThe Parity Multisig Exploit (2017) — A Catastrophic Access Control Failure Introduction Among all access control vulnerabilities in smart contract history, the Parity Multisig exploit of 2017 remains one of the most impactful and instructive. Unlike typical exploits where at00
WBWiktoria Blomgren Strandberginpentesting-dvwa.hashnode.dev·Mar 8 · 14 min readAuthorisation Bypass in DVWA1 Introduction In this post, the Authorisation Bypass vulnerability in the Damn Vulnerable Web Application (DVWA) is described. The objective for attacks on all levels is to identify any areas where a00
CCyberFreak999incyberfreak.hashnode.dev·Feb 22 · 4 min readHow to Test for IDOR VulnerabilitiesYou log into a web app to download your invoice. The URL looks harmless: https://example.com/invoice?id=4521 Out of curiosity, you change the number to 4520. You suddenly see someone else’s invoice. 00
SSifytechnologiesinpublic-cloud.hashnode.dev·Feb 10 · 12 min readAI Workload Security: What Every Business Leader Must KnowTable of Contents Introduction The Business Risk Landscape of AI Security Understanding AI Security Requirements for Non-Technical Leaders Key Questions to Ask Your Technology Teams Building Board-Level Oversight for AI Security Investing in AI...20