Security researchers point out the dangers of using a mobile device to connect to the Internet through unknown networks and the risk of charging them from untrusted places. Digital perils are even greater in Brazil, in the context of the 2014 World Cup championship, as cybercriminals spare no chance to lure in as many victims as possible. According to a study conducted in May in Sao Paolo by Kaspersky, security experts discovered more than 5,000 Wi-Fi access points while visiting various tou…