SK Telecom said on the 13th that it proactively blocked about 1.1 billion attempted telecom frauds in 2025, including voice spam, voice phishing calls and texts. The figure is up 35% from a year earlier, the result of aggressively adopting AI technology and operating it systematically.
In 2024, SK Telecom introduced an "AI model based on call-pattern analysis" that detects and blocks suspected voice phishing phone numbers not reported to relevant agencies. As a result, blocked voice spam and voice phishing calls reached 250 million, up 119% from a year earlier, and blocked texts reached 850 million, up 22% from a year earlier.
In addition, SK Telecom applied its in-house AI-based financial fraud detection security technology "ScamVanguard" to the SKT PASS spam filtering "bait text alert service" and the adot Phone's "AI safe block" feature. The technology detects voice phishing and spam calls and texts that impersonate financial institutions or acquaintances and provides warning alerts to users. In particular, the adot Phone also supports an "AI voice phishing detection" feature that analyzes risk signs in real time during calls and immediately guides users with pop-ups and alert tones.
SK Telecom plans to gradually expand the application of AI technology across the entire spam and phishing blocking process. To proactively respond to increasingly sophisticated phishing threats, it will automatically detect, collect and analyze malicious apps using AI and build a one-stop response system that extends to blocking threats and preventing damage in advance, strengthening the level of customer protection.