Núñez was featured in the book The Hacker Diaries: Confessions of Teenage Hackers (2002), by Dan Verton. At the time, he went by the nickname "RaFa."  Nuñez is deputy director for cpiu.us (Counter Pedophilia Investigative Unit) an organization dedicated to educate the public in how to protect their children and increase general public awareness about Online Pedophilia since 2000. Also founder of EnfoqueSeguro, a Spanish-language website that covers information security breaches.
Núñez has been interviewed by The New York Times, Znet Magazine, The Wall Street Journal, BBC (see the interview), Business Week (see the interview), CNN, Univision, Gato Pardo Magazine, El Nacional, El Universal, Televisa, TeleSur and Venevision and often appears as a public speaker on information security. He hosts a podcast called "Percepción 3.0" at one of the most visited news websites in Latin America Noticias24.com.