Sean Dillon a.k.a zerosum0x0 is a American researcher who is interested in attacking the Windows kernel. He was the first to reverse engineer the DOUBLEPULSAR SMB backdoor. He is a co-author of the ETERNALBLUE Metasploit module and contributions to the project. He has previously been a software engineer in the avionics and insurance industries, and his favorite IDE is still GW-Basic on DOS.