By Kanishka Singh (Reuters) – A Canadian jury on Saturday found Dutch national Aydin Coban guilty on all charges of sexually extorting a teenager from British Columbia whose video of her online harassment sparked a global debate on cyber-bullying. Coban, who was extradited to Canada, was convicted in the British Columbia Supreme Court of extortion, two counts of possession of child pornography, child luring and criminal harassment against Amanda Todd, the teenager who died by suicide in 2012. Todd sparked an international debate over cyber-bullying when she posted a YouTube video detailing her…