SK Telecom Reports Significant Q2 2025 Profit Decline and Revised Guidance Following Cybersecurity Incident

SKM
October 06, 2025

SK Telecom reported a temporary decline in consolidated revenue for the second quarter of 2025, which fell 1.9% year-over-year to KRW 4.34 trillion. Operating income plummeted 37.1% year-over-year to KRW 338.3 billion.

The substantial drop in operating income was largely due to approximately KRW 250 billion in one-off costs, including theoretical maximums for USIM replacement and compensation for authorized dealers. Consequently, net income for Q2 2025 decreased by 76.2% year-over-year to KRW 83.2 billion.

The cybersecurity incident also resulted in a net loss of approximately 750,000 MNO handset subscribers from the end of March to the end of June 2025, with 5G subscribers declining by 220,000 quarter-on-quarter to 17.02 million. Despite these headwinds, AI-related businesses showed resilience, with AI business revenue growing 13.9% year-over-year.

The company has revised its 2025 financial outlook, lowering the annual revenue guidance from KRW 17.8 trillion to KRW 17 trillion. Operating profit is now expected to underperform compared to the prior year, incorporating the financial impact of the 'Accountability and Commitment Program,' including 50% tariff discounts scheduled for Q3 and Q4 2025.

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