SMU Assistant Professor of Corporate Communication (Education) Michael Netzley commented on a cyber-extortion case in July last year. He had said that the victims may have an illusion of safety or privacy in their own room and behind a computer screen but they should not be putting their trust in strangers. The police said in a media statement yesterday that the number of sexually-related cyber extortion cases in Singapore has more than quadrupled in a year. Last year, there were at least 50 cyber-extortion attempts involving foreign women, compared to 11 in 2011.