The developers of ntopng offer a Community Edition for free. It is open-source and provides essential real-time traffic analysis, host monitoring, and protocol detection. While it lacks some advanced enterprise reporting features, it is perfect for small networks and labs. 2. ntopng Free Evaluation License

Beyond the immediate threat of malware, there are significant functional risks. Cracked software is frozen in time. Because it's illegal, it never receives crucial security updates or bug fixes from the legitimate developer. This means any vulnerability discovered in the software months or years after its release will remain unpatched on your system, making you a prime target for opportunistic attacks. Furthermore, you cannot rely on a cracked version for stability. The very act of cracking can introduce bugs or break core functionality, making it an unreliable tool for critical network monitoring.