Four people have been arrested over the hacking of 120,000 home security cameras in South Korea and the sale of sexually explicit footage, as well as creating exploitative content of children, the country’s National Police Agency said Monday. The hack is the latest in a global trend targeting internet protocol cameras, which are often used in homes to keep an eye on children and pets, as well as in businesses, hospitals and saunas. Along with violating laws against hacking, three suspects who