"Depravity of the abusers' conduct and the frequency with which known abusers were given the opportunity to continue preying upon children are astonishing," says the report on the crimes that continued for over 80 years in the US state.
Cho Ju-bin, 24, was found guilty of running an online network that blackmailed at least 74 women, including 16 teenagers, into what authorities called "virtual enslavement" by forcing them to send increasingly degrading sexual imagery of themselves.