My brother worked at a local mom & pop computer store here in Canada. He was asked to repair a PC for a family acquaintance. The "gentleman's" computer was acting up because he had tried installing a freeware (or malware) utility to create hidden partitions. My brother found all kinds of kiddie porn, all young males, some even the same age of his own son (who was 8 years old) and younger. He reported to the police, they confiscated the computer, and charged him to the fullest extent of Canada's child pornography law at the time (around 1999).
The result?
Despite the judge ruling that he could no longer possess any computers in his home, he actually studied computer science in jail, paid for by the Canadian taxpayer. My brother was harassed by some people in our small community who did not realize what kind of depraved photos and videos he found - and he was not allowed to tell anyone by police order. He claims that he would not report such finds again to the authorities.
And the pervert?
Out of jail after just a year (long enough to get his training finished) and has moved out West, making big bucks in IT. Now he has the knowledge to hide his child porn himself thanks to the Canadian penal system!