Giovanni Vigna is a Professor in the Department of Computer Science at the University of California, Santa Barbara. He is also the CTO at Lastline, Inc., and the head of the hacking group Shellphish. His research interests include malware analysis, web security, vulnerability assessment, and mobile phone security. He is known for organizing and running an inter-university Capture the Flag hacking contest, called iCTF, that every year involves dozens of institutions around the world.