Sim card

This technique seems to be proliferating and spreading, does anyone know who might be responsible?
Comments
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First of all, an English translation is necessary to fully understand the meaning of the video's title. Secondly, feel free to share the YouTube link here so we can take a look at it.
Regards
Life happens, Coffee helps!
Show your Attitude, when you reach that Altitude!
Bitdefender Ultimate Security Plus (user)
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South Korean telecom companies had their Sim card information stolen by hackers, causing 20 million people to change their cards. It is unknown... Is it hackers from a fraud group or the work of North Korea's state-level hackers?
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Have a look at the article linked below, written by Bitdefender Support.
SK Telecom, the affected company, has also shared news on the same topic in their article, as mentioned in the link below.
Additionally, since the article involves telecom companies, @agozob might be able to provide some insights here.
Regards
Life happens, Coffee helps!
Show your Attitude, when you reach that Altitude!
Bitdefender Ultimate Security Plus (user)
2 -
👍🤝
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