MGMarios Grivasindefprotocol.hashnode.dev·May 26 · 6 min readReverse Engineering the Gov.gr Wallet: How a Hardcoded API Key Exposed Millions of CitizensWhen it comes to government-backed digital transformation, the gov.gr wallet has been one of Greece's flagship projects, allowing citizens to carry their IDs, driver's licenses, and other official doc00
MGMarios Grivasindefprotocol.hashnode.dev·Mar 3 · 4 min readThe Ransomware Playbook: Anatomy of a Modern AttackRansomware is no longer just about encrypting files and demanding payment. It has evolved into a structured, multi-stage operation that mirrors professional software development and organized business00
MGMarios Grivasindefprotocol.hashnode.dev·Sep 15, 2025 · 2 min readHow Law Enforcement Tracks Cybercriminals. What Defenders Can LearnWhen we think about the darkweb and cybercrime, it’s easy to imagine anonymity, hidden servers, and criminals that never get caught. Yet, history shows that even the most notorious groups, from AlphaBay’s operators to ransomware gangs like REvil and ...00
MGMarios Grivasindefprotocol.hashnode.dev·Sep 8, 2025 · 2 min readBuilding a Cybercrime Timeline: Why History Matters in Threat IntelligenceCybersecurity news often feels like chaos, one breach after another, new ransomware names every week, shifting tactics, and endless headlines. But behind the chaos, there’s a timeline. And building that timeline is one of the most underrated skills i...00
MGMarios Grivasindefprotocol.hashnode.dev·Sep 3, 2025 · 3 min readLearning from Lazarus Group: Defensive Takeaways from a Notorious APTWhen we talk about Advanced Persistent Threats (APTs), few names resonate as much as Lazarus Group. Linked to North Korea, this threat actor has been active for over a decade, from the Sony Pictures hack (2014) to the WannaCry ransomware outbreak (20...00
