Valerio "MrSaighnal" Alessandroni is a seasoned offensive security professional with a lifelong passion for hacking. A former member of the Italian Army’s cyber units, he now leads EY Italy’s Offensive Security team, focusing on advanced red teaming and threat emulation. He’s behind open-source tools like Google Calendar RAT (GCR) and he holds certifications including OSCP, OSEP, OSWE, OSWP, CRTO, eWPTX, eCPTX and more. His bug bounty research has earned recognition from Microsoft, NASA, Harvard, and others. Off the keyboard, he rolls on the mat in Brazilian Jiu Jitsu and dreams of space exploration.