Latest news with #SKTelecomCo.
Time of India
26-05-2025
- Time of India
Probe into SK Telecom data breach expands to KT, LG Uplus
Seoul: A joint government-private investigation team looking into SK Telecom Co.'s recent large-scale data breach has extended its probe to the servers of two other major mobile carriers, KT Corp and LG Uplus, but found no signs they have been compromised, industry sources said on Monday. Initially, the team had asked local telecommunications and platform companies to conduct their own cybersecurity inspections. However, the approach was revised last week amid growing concerns that hackers using BPFDoor malware variants may have also targeted other South Korean mobile carriers, according to the sources. Following the expanded investigation, no traces of hacking activity have yet been found on the servers of KT or LG Uplus, they added, reports Yonhap news agency. In a media briefing last week, the investigation team revealed interim findings indicating that 25 malware variants had been discovered on 23 servers belonging to SK Telecom. These included 24 variants of the BPFDoor malware and one variant of WebCell. Two of the affected servers had been used as temporary storage for personal data, such as names, birthdates, phone numbers and email addresses, as well as international mobile equipment identity (IMEI) data. The IMEI is a unique identifier for each device on a network and could potentially be exploited in financial transactions. Servers at SK Telecom Co. containing personal information and universal subscriber identity module (USIM) data of all subscribers have been compromised in a cyberattack, raising concerns that critical USIM data used in financial transactions may have been leaked, a joint government-private investigation team. According to the team's interim findings, the breach dates back to June 15, 2022, when unidentified attackers are believed to have planted malware on the company's servers. SK Telecom discovered the breach only a month ago, on April 18. Investigators said it is believed that 9.32 gigabytes of USIM data, equivalent to roughly 26.9 million international mobile subscriber identity (IMSI) numbers, have been leaked. SK Telecom currently has 25 million subscribers, including 2 million budget phone users.
Korea Herald
26-05-2025
- Business
- Korea Herald
Investigation into SK Telecom data breach expands to KT, LG Uplus: sources
A joint government-private investigation team looking into SK Telecom Co.'s recent large-scale data breach has extended its probe to the servers of two other major mobile carriers, KT Corp. and LG Uplus Corp., but found no signs they have been compromised, industry sources said Monday. Initially, the team had asked local telecommunications and platform companies to conduct their own cybersecurity inspections. However, the approach was revised last week amid growing concerns that hackers using BPFDoor malware variants may have also targeted other South Korean mobile carriers, according to the sources. Following the expanded investigation, no traces of hacking activity have yet been found on the servers of KT or LG Uplus, they added. In a media briefing last week, the investigation team revealed interim findings indicating that 25 malware variants had been discovered on 23 servers belonging to SK Telecom. These included 24 variants of the BPFDoor malware and one variant of WebCell. Two of the affected servers had been used as temporary storage for personal data, such as names, birthdates, phone numbers and email addresses, as well as international mobile equipment identity data. The IMEI is a unique identifier for each device on a network and could potentially be exploited in financial transactions. SK Telecom discovered the breach April 18. (Yonhap)
Korea Herald
19-05-2025
- Business
- Korea Herald
Probe suggests possible leak of SK Telecom users' private info from cyberattack
Servers at SK Telecom Co. containing personal information and universal subscriber identity module data of all subscribers have been compromised in a cyberattack, raising concerns that critical USIM data used in financial transactions may have been leaked, a joint government-private investigation team said Monday. According to the team's interim findings, the breach dates back to June 15, 2022, when unidentified attackers are believed to have planted malware on the company's servers. A total of 23 SK Telecom servers were compromised, all of which store four types of USIM data, including international mobile subscriber identity information. The IMSI is a unique identifier for each user on a network and could potentially be exploited in financial transactions. Among the affected servers, two had been used as temporary storage for personal data, such as names, birthdays, phone numbers and email addresses. Investigators said they are still working to determine the exact scope of data stored on those two servers. SK Telecom detected the breach April 18. (Yonhap)
Korea Herald
07-05-2025
- Business
- Korea Herald
SK Chairman Chey Tae-won apologizes for data breach at SK Telecom
SK Chairman Chey Tae-won on Wednesday made a public apology for a recent large-scale data breach at SK Telecom Co., which may have leaked sensitive information of some 25 million users. "I apologize for the concerns and inconvenience caused by a cyberattack at SK Telecom," Chey said during a press conference. SK Telecom detected hacking on April 18 that showed signs of a large-scale leak of customer universal subscriber identity module data. In response, the company has offered to replace the USIM of all 25 million subscribers, including 2 million budget phone users, free of charge to prevent potential damage. (Yonhap)
Korea Herald
04-05-2025
- Business
- Korea Herald
Nearly 20 mln sign up for SKT's USIM Protection Service after data breach
SK Telecom Co. said Sunday that nearly 20 million subscribers have signed up for its USIM Protection Service following a large-scale data breach. A total of 19.9 million people had registered for its USIM Protection Service as of Sunday morning, while 956,000 have already replaced their universal subscriber identity module chips, SK Telecom said in a daily briefing. An additional 7.6 million subscribers have booked USIM replacements online. SK Telecom explained that the USIM Protection Service provides the same level of defense against illegal financial activities as physically replacing the USIM chip. The company detected a cyberattack on April 18 that showed signs of a large-scale leak of customer USIM data. In response, it offered free USIM replacements to all 25 million subscribers, including 2 million budget phone users, to prevent potential damage. The telecom provider also urged users to register for its USIM Protection Service. In a further step to enhance security, SK Telecom will temporarily suspend new subscriber sign-ups at its 2,600 retail stores nationwide starting Monday. This move comes at the request of the South Korean government to prioritize customer protection and USIM replacements. Additionally, the company has implemented an automatic enrollment system for digitally vulnerable individuals into the USIM Protection Service. To assist international travelers, SK Telecom has set up temporary booths at Incheon International Airport for on-site USIM replacements. Those using international roaming services are not eligible for the USIM Protection Service and are advised to replace their USIM chips to safeguard their data during traveling. (Yonhap)
