Trojan diallers call premium lines, racking up huge charges
                                
                                
                                    (Newser) -
                                    Criminals have revived an old trick dating from the days of dial-up Internet access to target smartphone users. Trojans known as "diallers" that hijack a line to dial dozens of premium-rate numbers or send premium SMS messages are on the rise again, according to security experts. The diallers—generally...