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Nearly 40 Mln Tving Accounts Compromised in Massive S. Korea Data Breach: Probe

Investigators said a stolen developer access key let hackers reach 20 categories of data, including names, birth dates and phone numbers.

  • On Thursday, investigators revealed a massive data breach at South Korean streaming platform Tving, compromising nearly 40 million user accounts and 361 technical assets including source code.
  • An unidentified hacker stole a developer's access key to infiltrate Tving's internal systems; the company failed to report the breach to the Korea Internet & Security Agency within 24 hours of detecting it on May 30.
  • Leaked information spans 70 types of data including names, dates of birth, and email addresses, affecting 22.06 million active accounts and 17.37 million inactive or dormant accounts.
  • The Personal Information Protection Commission will determine penalties for Tving, which recently posted 6 billion won in operating profit on 140.7 billion won in quarterly sales.
  • Investigators warned that compromised data could fuel cybercrimes such as smishing and voice phishing, though Tving has since strengthened security measures with no additional attacks detected.
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Center

Tving has decided to provide hacking and phishing protection insurance guaranteeing up to 3 million won per person, upgrades to a premium viewing environment, and Tving Points to restore customer trust following a cyber security breach. On the 3rd, at the Koreana Hotel in Gwanghwamun, Seoul...

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Left

It has been revealed that core technological assets, including recommendation and search algorithms and personal information contained in 39.54 million accounts, were leaked from the domestic online video service (OTT) Tving due to lax management of system access keys. On the afternoon of the 3rd at 2 p.m., the Ministry of Science and ICT's joint public-private investigation team [attended] the Tving infringement case at the Government Complex S…

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(Seoul = Yonhap News) Reporter Yoo Hyun-min = The number of accounts leaked externally due to the personal information leak at the online video streaming service (OTT) Tving, including duplicates, has reached nearly 40 million...

·Seoul, Korea (the Republic of)
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Lean Right

In the personal information leak incident at TVING last June, 30GB of technical assets, including information on 39.54 million user accounts and source code, were leaked. Attackers infiltrated the operating system by exploiting development environment access keys, and a large amount of personal information, including CIs (Identity Identity), was stolen. The government ordered TVING to impose fines and rebuild its security system.

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asiae.co.kr broke the news on Wednesday, September 2, 2026.
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