CuraSec

Plan active

Sony ISP subsidiary breach exposes 2.5M customer records

2026-10-28 17:09 UTC · BleepingComputer · read the source ↗ #data-breach#pii-exposure#third-party-risk
  • Engineer — Skip
  • SOC/IR — Learn: No IOCs or TTPs published; breach affects a Japanese ISP subsidiary with no enterprise detection surface. Monitor for follow-on phishing campaigns targeting affected customers if relevant to your sector.
  • Leader — Plan: Benchmark your own vendor breach-notification SLAs against this incident — Sony’s response timeline and disclosure process offer a reference case for updating your third-party incident response playbook this quarter.
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