Police in New Zealand say they caught a teen scammer sending thousands of scam text messages through a device that mimics a cell tower.Manish Rajput/Getty ImagesA New Zealand teenager sent thousands of scam texts using a fake cellphone tower before he was caught.The tactic is called "smishing." It uses a so-called SMS Blaster to trick cellphones.The FBI and FTC have warned of rising smishing scams in the US.Police in New Zealand say they thwarted a teen who was carrying out a wide-scale "smishing" scam to collect personal data from thousands of people's cellphones.Most anyone who has taken a corporate cyber security training is familiar with the concept of phishing, a process where scammers contact victims, usually through email, to get the person to share personal information or passwords accidentally.Smishing, on the other hand, is a form of phishing where criminals use an "SMS Blaster" to send out fake text messages claiming to be from banks, New Zealand police said in a statement.