Keller, director of customer security at Ericsson, is an information security evangelist with over 30 years of experience. He started his career in the South African Defense Force’s Combat School, where he served as an instructor in Army intelligence. Keller took this background into the corporate world and was instrumental in creating the global information security function for one of the country’s Big Five banks. He subsequently was appointed as a chief information security officer for one of South Africa’s leading corporate and merchant banks.