“When he sits down at his computer, what he will do at work is much the same as what he does at the dojo. This work has led to the rescue of 23 children from rape and assault, the seizure of a quarter-million child abuse videos, and the arrest of 370 alleged pedophiles.” Gift link: wapo.st/4exYQFV

Opinion | The Cyber Sleuth

Geraldine Brooks on Jarod Koopman of the Internal Revenue Service