MUMBAI, June 17 -- The Dahisar police have arrested a 25-year-old man, who worked as a security guard, for blackmailing and defaming over 300 women by creating fake social media IDs in their name and posting obscene photos and hate messages. The police have identified the accused as Shubham Kumar Singh, a native of Bihar. He was arrested from Karnataka, where he was working. The complainant is a college student from Mumbai who approached the police on January 31, stating that an unknown accused had created many fake Instagram accounts in her name. She further said that these accounts were being used to post and share obscene and hateful content about her. Corroborating her statement, an officer from Dahisar police station said, "The unknown accused was using obscene language to blackmail the complainant and defame her through social media". Taking the matter seriously, Dahisar police then initiated an investigation to trace the accused. They obtained information about the Instagram IDs from Facebook and Google. Based on this information, the accused was traced to Sandur in Karnataka. A team of cyber cell officers then went to Karnataka and arrested Singh. Police said that he had completed a soft skill programme course from a computer training centre....