Social networks can make it much harder for paedophiles to share indecent images but they choose not to invest in such technology, an outgoing senior British police officer will say on his last day. Chief Constable Simon Bailey—the National Police Chiefs’ Council’s lead on child protection and head of Norfolk Constabulary—is expected to point the finger at Facebook during a final speech on Wednesday marking the end of his 35-year career in the police. The company’s plans to introduce blanket end-to-end encryption threaten to “turn the lights off” on the issue of online child sexual abuse, Bailey will warn the PIER21 conference. Describing the current scale of offending as “epidemic,” the retiring chief will say: “Unfortunately, the technology industry continues to put profit before safeguarding children. Facebook is already the most used platform for the sharing of indecent images and yet they are planning to wilfully blind themselves by introducing …