KT Data Breach Subscription Cancellation: Over 30,000 Users Flee After Penalty Waiver
Over 30,000 KT customers switched carriers in three days after the company waived termination penalties following a data breach. Discover why SK Telecom is winning the market.
More than 30,000 customers walked away in just 72 hours. KT Corp., South Korea's second-largest carrier, is seeing its 'penalty waiver' strategy backfire as users leverage the offer to switch to competitors following a major data breach.
KT Data Breach Subscription Cancellation Trends
According to industry sources cited by Yonhap, 31,634 users migrated to other carriers between Wednesday and Friday. This mass exodus began immediately after KT started waiving contract termination fees as a compensatory measure for a Jan 1, 2026 security incident. Instead of restoring trust, the move provided an easy exit for frustrated subscribers.
SK Telecom’s Aggressive Acquisition
Of those who left, 18,720 subscribers—more than 70 percent—switched to SK Telecom Co., while approximately 7,200 moved to LG Uplus Corp. Watchers attribute SK Telecom's dominance in this migration to its policy of restoring membership benefits for returning customers, effectively turning KT's crisis into its own growth opportunity.
The rapid loss of high-value subscribers poses a significant threat to KT's Average Revenue Per User (ARPU) and long-term market valuation in 2026.
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