Security · November 12, 2026
South Korean Regulator Shifts to Preventive Data Security with Heavy Fines and Executive Liability
The Personal Information Protection Commission announced a major shift in national data security policy, moving away from reactive penalties toward preventive measures and heightened accountability for corporate leadership. This strategic change introduces severe financial consequences for repeated or serious data breaches, including fines reaching up to ten percent of annual revenue, while explicitly defining the management responsibilities of chief executive officers and chief privacy officers. The regulator emphasized that protecting personal information must be treated as a core management duty rather than a simple regulatory compliance task. These new rules apply to data breach incidents occurring after the enforcement date of the revised legislation.
A central component of the new framework is the introduction of punitive surcharges designed to deter negligence. Under regulations effective from September 11, authorities may impose fines amounting to a maximum of ten percent of sales on entities that commit repeated or grave violations of personal information protection laws. The method for calculating these fines has also been strengthened to ensure they reflect current business scales. Previously based on the average revenue over the preceding three years, the new standard applies whichever figure is higher between that three-year average or the revenue from the most recent fiscal year. This adjustment means companies experiencing rapid growth could face significantly higher penalty bases than under the old system. However, the commission noted it will also provide incentives during the calculation process for companies that demonstrate voluntary investment in preventive security measures.
The policy explicitly mandates that chief executive officers assume overall management responsibility for data protection, ending the practice of delegating these duties solely to privacy or security officers. To support this, the regulator is preparing specific manuals and action guidelines detailing the roles and response procedures CEOs must follow during a breach. Simultaneously, the independence and authority of chief privacy officers are being reinforced through new governance requirements. Major data protection matters must now be reported to the board of directors, and the appointment of a new chief privacy officer requires board approval followed by formal notification to the commission within six months. These steps aim to transform data security from an operational task into a strategic issue managed directly by top leadership and the board.
Certification standards for information security management systems are undergoing rigorous improvement to address concerns about their effectiveness following recent large-scale breaches. The regulator plans to move beyond formalistic audits to verify the actual implementation of protective measures in the field, alongside strengthening post-certification oversight. Furthermore, the scope of mandatory certification is set to expand, with draft enforcement decrees specifying the targeted organizations ahead of a July 2027 implementation. Notification obligations for data breaches have also been widened. Previously triggered only upon confirmation of a leak, the duty to notify now extends to cases where there is a high probability of a breach, including incidents involving ransomware that lead to data forgery or destruction. Failure to comply with these notification duties can result in fines and influence future surcharge determinations.
The commission is also promoting the principle of privacy by design, urging companies to integrate security protocols during the initial system development phase rather than adding them later at great cost. To assist smaller enterprises lacking resources, a consulting support project with a budget of approximately two point four billion won is planned for 2027. Additionally, the regulator is addressing emerging challenges posed by connected devices and artificial intelligence. Plans include monitoring data flows in smart products, expanding international cooperation to track leaked data on the dark web, and establishing special provisions that allow safe data utilization for artificial intelligence development under strict conditions. These comprehensive measures signal a transition toward a holistic security ecosystem encompassing system design, investment, leadership accountability, and victim relief.