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(CBS11) – Spoofing has grown rapidly in recent years. They’re downloadable apps that let you change caller ID and even your voice.

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Spoofcard is a well-known spoofing app made by Tel Tech Systems.  Company Vice President Ethan Garr says it’s mained used to protect callers’ privacy.

“Tools like this allow you to really maintain your identity, the way you want to identify yourself,” says Garr.

It has other features to disguise who and even where you are.  If you oversleep you can use the feature that makes a sound like you’re stuck in traffic.

Medical clinic director Daniel Adar uses it a different way; to collect unpaid bills from patients who ignore his calls.  He puts their own officer number in caller ID, but when they pick up the phone it’s not their employer.  It’s him.

“Most of the time I get a good response from them and it works well,” says Adar.

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“But security expert Paul Viollis says there’s a dark side to spoofing.

“The purpose is very plain and simple. It’s to intentionally deceive others.  End of story,” Viollis says.

Garr admits Spoofcard has been used for malicious purposes but says those instances are rare.

“It provides a valuable service that helps people and it does far more good than it does harm,” says Garr.

There have been some arrests from improper Spoofcard use.  The company says it always cooperates with law enforcement and it has its own fraud unit to help cut down on any abuses.

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