Natalie Silvanovich (@natashenka) discussed reverse engineering hardware, working on security software, and the fantastic world of Tamagotchis.
Natalie's site and blog
Hardware Excuse Generator
Original CCC 2012 talk: Many Tamagotchis Were Harmed in the Making of this Presentation
CCC 2013 talk: Even More Tamagotchis Were Harmed in the Making of this Presentation
Natalie's upcoming BlackHat talk: Attacking ECMAScript Engines with Redefinition
Flash exploit article for Project Zero: One Perfect Bug: Exploiting Type Confusion in Flash
Tamagotchis are still available as are the works of Shel Silverstein (Snowball is in Falling Up).
Natalie's Tamagotchi board
"> Natalie's Tamagotchi board