2022-06-23 (Th) Grindfest 2022 June 24, 2022 biohack bodyhack citizen science completed experimental gathering grind grinders Grindfest grindfest2022 implant +
2019-05-20 (M) Grindfest Five May 21, 2019 biohack bodyhack citizen science completed experimental gathering grind grinders Grindfest grindfest5 implant +
2017-07-27 through 2017-07-30 DefCon 25 August 04, 2017 b-sides black hat Captain Crunch convention Cory Doctorow Dangerous Minds Podcast DefCon DefCon 25 gathering gray hat grey hat Hack a Day HackaDay hacker Las Vegas presenting speaking white hat +