Breach, Data Security, Threat Management

Up to 35M South Koreans affected by breach

The personal data belonging to an astounding 35 million people in South Korea may have been compromised this week when hackers infiltrated SK Communications, which runs the Asian nation's largest social networking site, Cyworld, and third-most trafficked search engine, Nate, according to published reports. The Korea Herald reported that officials at SK Communications, part of the SK Group, blamed malware that could be traced back to China. Experts fear the compromised data, which includes usernames, phone numbers, email addresses and passwords, could be used in other attacks that seek even more sensitive information.

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Over 5.5M impacted by Yale New Haven Health breach

Major Connecticut-based nonprofit healthcare network Yale New Haven Health has confirmed having data from more than 5.5 million individuals compromised following a network intrusion last month, making the incident the largest health data breach so far this year, The Register reports.

Data breach victimization in the US escalates

More than 91.3 million individuals across the U.S. have been impacted by data breaches during the first quarter of 2025, which is 26% higher than the same period last year, even though breach incidents slightly declined year-over-year, according to Infosecurity Magazine.

Over 260K compromised in Kelly Benefits breach

Kelly Benefits, a Maryland-based benefits administration and payroll solutions provider, has confirmed that almost 264,000 individuals served by its customers Amergis, CareFirst, Beam Benefits, Intercon Truck of Baltimore, Beltway Companies, The Guardian Life Insurance Company of America, Transforming Lives, and Publications Circulation Fulfilment had their data compromised following a cyberattack in December, SecurityWeek reports.

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Related Terms

BitChecksumCiphertextData Encryption Standard (DES)DecryptionDefacementDenial of ServiceDigital EnvelopeDigital SignatureDigital Signature Algorithm (DSA)

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