Sony’s admission that its PlayStation Network and Qriocity on-demand TV service have been hacked by a lone computer hacker is “a significant short-term blow” for the company, Michael French, editor-in-chief of games trade magazine MCV tells me. It is believed to be one of the biggest-ever security breaches of the Internet. Qriocity, which launched in the U.S. in April 2010, uses the same log-in details as PlayStation Network, says Informa analyst Andrew Ladbrook. Sony’s on-demand movie service has been rolled out to Canada, France, Germany, Italy, Spain and the UK. “It will affect people’s download purchases in the long-term. This is a big setback for the service,” says Ladbrook.