A Sogang University data breach has exposed personal information belonging to nearly 180,000 students, alumni and staff. The Seoul university said unidentified attackers accessed its systems from overseas and leaked data linked to its integrated login service.
The compromised information includes names, user ID numbers, affiliations, email addresses, mobile phone numbers and encrypted login passwords.
Sogang University said resident registration numbers, financial account numbers and other highly sensitive data were not affected. However, the exposed details could still support phishing, impersonation and other targeted scams.
Attack began three days before discovery
The university said the intrusion began on August 11, 2026. It detected the breach on August 14.
After discovering the incident, Sogang University blocked the malicious IP address, restricted access to the affected service and isolated its network. The university said it completed emergency response measures and began inspecting internal servers for additional vulnerabilities.
It is also working with external security specialists to improve monitoring and introduce further protections.
The university has sent apology notices to affected students and staff. It plans to provide more guidance as its investigation continues.
Encrypted passwords included in stolen data
The Sogang University data breach affected encrypted passwords used with the university’s integrated login system. The school urged all current and former users to change their passwords as soon as possible.
People who reused the same password on other websites should also update those accounts. Attackers may try to crack stolen password hashes or use the exposed contact details in phishing campaigns.
Affected people should remain cautious of unexpected phone calls, emails and text messages. Scammers could claim to represent the university, a bank or another trusted organisation to make their messages appear legitimate.
Former President Park Geun-hye may be affected
The incident may also affect people who left the university many years ago. Local reports suggest former South Korean President Park Geun-hye appears among those whose information was exposed.
Park entered Sogang University’s electronics engineering department in 1970. Reports said the university’s breach verification service returned a notice confirming leaked personal information when her name and student ID number were entered.
Her inclusion highlights the long-term risk associated with university data breaches. Alumni records can remain valuable to criminals because they contain contact information and institutional connections that can make phishing attempts more convincing.
University promises stronger security measures
Sogang University said it takes the incident seriously and will conduct a fundamental review of its systems. The school plans to strengthen its security controls to prevent similar breaches.
Its immediate response focused on containing the intrusion and protecting the affected service. The wider review will determine whether other weaknesses remain within the university’s systems.
Conclusion
The Sogang University data breach exposed login-related information for nearly 180,000 people, including former students and staff. Everyone affected should change their password and remain alert for phishing attempts that use stolen university details.
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