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SecurityQuiet 13d · day 15

South Korea hit by second wave of financial cyberattacks in a month

Daishin Securities, Mirae Asset, and Bithumb targeted as AI-driven hacking accelerates across Asia.

newest coverage 13d agosummary written 13d ago7 pieces1 likes & upvotes NewswiresMastodonBluesky

What to know

  • South Korea faced a second cyberattack wave in late October targeting Daishin Securities (38,490 customer records exposed), Mirae Asset, and Bithumb, roughly one month after a previous attack linked to a China-based hacker using AI penetration testing tool Artex.
  • The attacks have sparked regional alarm, with Japan also reporting an incident at GMO Internet, though investigators have not confirmed connections between the breaches across Asia.
  • South Korea's financial regulator responded by calling for stronger cybersecurity measures and announcing audits of dozens of private-sector IT systems, citing concerns that AI is accelerating large-scale hacking capabilities.
  • Daishin has notified affected customers and pledged compensation; Mirae and Bithumb have not confirmed whether customer data was compromised, and the FSC did not immediately comment.

“Security researchers linked the September wave of attacks on South Korea to a suspected China-based hacker who relied on an AI penetration testing tool called Artex, though officials are still investigating the root cause of the latest breaches.”

TechCrunch · TechCrunch ↗

Daishin Securities South Korean brokerageMirae Asset Global Investments South Korean brokerageBithumb Cryptocurrency exchangeSouth Korea Financial Services Commission Financial regulator

South Korea hit by second wave of financial cyberattacks in a month
techcrunch.com

How it unfolded 3 developments, newest first · click a bar or a number to jump articlesposts

Peak 3 pieces in 4h at Oct 28, 7 AM; 7 pieces over 15 days (2 articles · 5 posts) Oct 27, 11 PM — 2 pieces · 1 article · 1 post — Mastodon 1, Newswires 1Oct 28, 3 AM — quietOct 28, 7 AM — 3 pieces · 1 article · 2 posts — Mastodon 2, Newswires 1Oct 28, 11 AM — quietOct 28, 3 PM — quietOct 28, 7 PM — quietOct 28, 11 PM — 1 piece · 1 post — Mastodon 1Oct 29, 3 AM — quietOct 29, 7 AM — 1 piece · 1 post — Bluesky 1Oct 29, 11 AM — quietOct 29, 3 PM — quietOct 29, 7 PM — quietOct 29, 11 PM — quietOct 30, 3 AM — quietOct 30, 7 AM — quietOct 30, 11 AM — quietOct 30, 3 PM — quietOct 30, 7 PM — quietOct 30, 11 PM — quietOct 31, 3 AM — quietOct 31, 7 AM — quietOct 31, 11 AM — quietOct 31, 3 PM — quietOct 31, 7 PM — quietOct 31, 11 PM — quietNov 1, 2 AM — quietNov 1, 6 AM — quietNov 1, 10 AM — quietNov 1, 2 PM — quietNov 1, 6 PM — quietNov 1, 10 PM — quietNov 2, 2 AM — quietNov 2, 6 AM — quietNov 2, 10 AM — quietNov 2, 2 PM — quietNov 2, 6 PM — quietNov 2, 10 PM — quietNov 3, 2 AM — quietNov 3, 6 AM — quietNov 3, 10 AM — quietNov 3, 2 PM — quietNov 3, 6 PM — quietNov 3, 10 PM — quietNov 4, 2 AM — quietNov 4, 6 AM — quietNov 4, 10 AM — quietNov 4, 2 PM — quietNov 4, 6 PM — quietNov 4, 10 PM — quietNov 5, 2 AM — quietNov 5, 6 AM — quietNov 5, 10 AM — quietNov 5, 2 PM — quietNov 5, 6 PM — quietNov 5, 10 PM — quietNov 6, 2 AM — quietNov 6, 6 AM — quietNov 6, 10 AM — quietNov 6, 2 PM — quietNov 6, 6 PM — quietNov 6, 10 PM — quietNov 7, 2 AM — quietNov 7, 6 AM — quietNov 7, 10 AM — quietNov 7, 2 PM — quietNov 7, 6 PM — quietNov 7, 10 PM — quietNov 8, 2 AM — quietNov 8, 6 AM — quietNov 8, 10 AM — quietNov 8, 2 PM — quietNov 8, 6 PM — quietNov 8, 10 PM — quietNov 9, 2 AM — quietNov 9, 6 AM — quietNov 9, 10 AM — quietNov 9, 2 PM — quietNov 9, 6 PM — quietNov 9, 10 PM — quietYesterday, 2 AM — quietYesterday, 6 AM — quietYesterday, 10 AM — quietYesterday, 2 PM — quietYesterday, 6 PM — quietYesterday, 10 PM — quietToday, 2 AM — quietToday, 6 AM — quietToday, 10 AM — quietToday, 2 PM — quietToday, 6 PM — quiet 12–3
Oct 29Oct 31Nov 2Nov 4Nov 6Nov 8now · 8:59 PM ET
  1. 2

    South Korea's financial regulator calls for stronger cybersecurity measures

    Following the string of attacks on financial firms and government agencies, South Korea's financial regulator called for stronger cybersecurity measures and announced plans to conduct security checks on dozens of IT systems in the private sector.

  2. 3

    Second cyberattack wave hits Daishin Securities, Mirae Asset, and Bithumb

    South Korea's financial industry was struck by a second wave of cyberattacks roughly a month after the September incidents. Daishin Securities reported a breach exposing personal information of 38,490 customers including names, email addresses, and mobile phone numbers. Mirae Asset Global Investments and Bithumb reported separate cybersecurity incidents, though neither confirmed customer data was taken.

    “South Korea's financial institutions have been hit by another wave of cyberattacks, highlighting the growing risk of AI-driven hacking in Asia.”
    — TechCrunch
    1. 1 outlet South Korea’s financial industry hit by fresh wave of cyberattacks

      first by TechCrunch, 14d ago

    • ottoto2017@prattohome.com

      「韓国の金融業界が新たなサイバー攻撃の波に見舞われる 」： # TechClunch 「韓国の金融機関が新たなサイバー攻撃の波に見舞われ、アジアにおけるAIを活用したハッキン​​グのリスクの高まりが浮き彫りになった。今回の事件では、証券会社のダイシン証券とミライアセットグローバルインベストメンツ、そして暗号資産取引所のビットハムが被害を受けた。 今回の事件は、 韓国の金融機関を標的とした 一連のサイバー攻撃 から約1か月後に発生し、韓国の銀行システムだけでなく、それ以外の分野における脆弱性への懸念が高まっている。セキュリティ研究者らは、9月に韓国で発生した一連の攻撃は、Artexと呼ばれるAI侵入テストツールを利用した中国を拠点とするハッカーによるものとみ…

      ottoto2017@prattohome.comMastodon13d agoview on Mastodon ↗
  3. 1

    Japan reports cybersecurity incident at GMO Internet

    Japan reported a cybersecurity incident involving GMO Internet following a series of attacks on its financial institutions, with investigators noting they have not yet established a connection between the Asia-wide incidents.

    • TechCrunch@mstdn.social

      South Korea’s financial institutions have been hit by another wave of cyberattacks, highlighting the growing risk of AI-driven hacking in Asia. https:// techcrunch.com/2026/10/28/sout h-koreas-financial-industry-hit-by-fresh-wave-of-cyberattacks/?utm_source=dlvr.it&utm_medium=mastodon

      TechCrunch@mstdn.socialMastodon14d ago1▲view on Mastodon ↗
  4. background

    China-based hacker targets South Korean financial firms using AI tool — Security researchers linked a September wave of cyberattacks on South Korean financial institutions to a suspected China-based hacker who relied on an AI penetration testing tool called Artex, though officials were still investigating the root cause.

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