About the Authors

Gilberto Persico is a Unix system, networking, and security engineer with over 30 years of experience in the IT world, working as a programmer, architect, security auditor, and systems and network engineer. He worked for IBM, Sun Microsystems, Oracle, and Huawei both as an employee and as a freelancer, designing, developing, and supporting production-ready enterprise-grade architectures for dozens of very important customers. He also conceived, designed, and developed Fl0wer, a new generation network flow analysis product, and deployed it in a big setup, successfully controlling two big data centers. He plays cello in his free time and raises a daughter when not hacking things in his lab. He also loves resurrecting old systems, retro-computing, and is currently works as a NOC team leader in Econocom.