Security check for Windows: Use the free “Nessus” tool to check your system for vulnerabilities and security gaps
Think your Windows PC is secure just because you install updates? Nessus Essentials, free for home users, scans for hidden vulnerabilities you'd never spot alone. It flags risks like missing patches, weak passwords and open ports, then sorts them by severity – critical, high, medium and beyond. Each finding comes with a clear explanation and suggested fix, so you know exactly what to tackle. A professional-grade security check that's surprisingly simple to run.