The following are the images I couldn't find a source for:
Slide 13: barefoot running
Slide 16: BinaryEdge.io image
Slide 21: Cartos de Continente screenshot
Slide 22: Table "Cost of to buy an zero day"
SLide 47: Table of drug-induced deaths in Europe--I looked up emcdda.europa.eu but couldn't find it.
Slide 52: Security Champion mug--is the image 'author's own'?
Slide 54: 3 images from OWASP