SK Innovation security incident history
Hacking, data breaches and other security incidents involving SK Innovation, with related coverage.
Signs of employee data breach in SK Innovation internal system
In mid-August 2026, SK Innovation detected signs of abnormal external access to employee information in an internal business system. The data accessed is presumed to include names, departments, titles, contact details and internal email addresses, and whether it was actually leaked and the extent of the impact are under investigation. The company reported the matter to the relevant authorities and took security measures, and no secondary damage had been confirmed as of September 2.
Related reports: 7 · last report →SK Innovation E&S belatedly reports server hack
Impact: Hack of about 15GB of server data
In April 2026 it emerged that SK Innovation E&S had belatedly reported a hacking incident that occurred about four years earlier. The hack hit 15GB of data on an SK E&S server directly managed by SK C&C, and allegations were raised that the incident was concealed for 40 months.
Related reports: 3 · last report →SK Innovation E&S reports hacking incident four years later
SK Innovation E&S reported a hacking incident to the Korea Internet & Security Agency (KISA) about four years after it occurred. The company explained that it had been unaware of its reporting obligation and said it could not confirm whether data had been leaked, even though a leak was presumed. Allegations later emerged that an employee died while responding to the hack and that the company had denied the hacking.
Related reports: 5 · last report →