Charity says calls to its Childline service about online sexual abuse and exploitation have risen 36% in a year Charity says calls to its Childline service about online sexual abuse and exploitation have risen 36% in a year Children reported a rise in online blackmail attempts involving sexual images in the UK last year, according to a leading charity. The NSPCC said contacts with its Childline service relating to online sexual abuse and exploitation rose by 36% last year, driven by an increase