Wonderland - The Worst Offenders

Before Operation Cathedral, the largest ever seizure of online child pornography was 7,000 separate images. After examining over 100 Wonderland members' computers, police uncovered a staggering 750,000 images and 1,800 video clips. One Italian man owned 180,000 images alone. Experts estimated the true number of illicit images amassed by the group might have been upwards of 2 million. Some of the encryption used by Wonderland members was so advanced that even the world's leading code-breaking experts were unable to crack it. The seven remaining UK-based members pleaded guilty to conspiracy to distribute indecent images of children in February 2001.