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If the caller's name is 'Mom' when you receive a call, it would be difficult to think of it as voice phishing.

A new voice phishing technique by manipulating the caller number was confirmed, and the police launched an investigation.



Correspondent Kim Min-jun.



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On the 15th of last month, woman A in her 20s received a phone call.



Her caller name appeared as 'Mom'.



[Victim A: You asked for money, saying we kidnapped your mother now.

Are you going to kill your mother? You spank her with your body in this way.] Turns



out it was a scam.



It was a new type of voice phishing targeting a loophole in the mobile phone caller ID system.



When a call comes in from a number that is already stored, the saved name, 'Mom', should appear.



At this time, the voice phishing criminals manipulated part of the caller number to the same number and called the victim through an international call.



If only the last 8 digits of the caller number are the same, the caller is displayed as the name of the same number stored in the phone book.



[Hyungki Choi/Professor of Software Department at Sungkyunkwan University: (Program is a phone number) I have to compare all 11 digits, but instead of comparing only the last 8 digits…

If you call the victim by stealing an overseas number with the same last eight digits (you are deceived)]



In order to deceive the victim, the scammers even collected personal information of the victim in advance through illegal apps and hacking.



Cell phones that only display the name without the caller ID were also targeted.



Mobile phones made by Samsung and LG display the name and number together, but Apple only displays the caller's name.



The three telecommunication companies said, "Telecommunication companies only deliver radio waves and have no authority to regulate it," and the handset manufacturer only took the position that "we are considering various options."



Police urged special attention, saying, "It is a new technique that is difficult to determine the extent of the damage."



(Video coverage: Kang Dong-cheol, video editing: Park Jin-hoon)