I Thought My System Was Secure… Until I Found This One Mistake

I used to think my system was secure. Not “enterprise-grade security team” secure. But definitely: 👉 “I know what I’m doing” secure. Strong passwords? ✅ Firewall enabled? ✅ Antivirus installed? ✅ I mean… what could possibly go wrong? 😌 The Confidence Phase Like many developers, I believed security was something like: “If nothing bad has happened yet, I must be doing it right.” And honestly? For a while… that seemed true. No breaches. No alerts. No weird activity. Just peaceful ignorance. 🧪 The Curiosity That Started It All One day, out of pure curiosity, I decided to run a basic security check on my own setup. Nothing fancy. Just: Reviewing open ports Checking running services Looking at logs You know… the stuff we all say we do regularly. 😐 The Moment Everything Changed That’s when I saw it. An open port. Not just any port. 👉 A port that should NOT have been open. At first, I thought: “That’s probably nothing.” (Yes… I was still in denial.) 🔍 Digging Deeper I checked what was running