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In the first half of 2025, more than 255K accounts were blocked by users through Talk Siren alerts, including Globe Signal, Stranger Signal, and Fake Signal, of which more than 60K accounts were reported.

The number of accounts blocked through Talk Siren decreased by approximately 27%, compared to the second half of 2024. This decline is attributed to the establishment of an “early self-blocking” pattern, a behavior in which a user blocks a person immediately after checking an alert.

Meanwhile, the number of reported accounts decreased by approximately 5%, but a pattern in which users report when they become aware of Talk Siren alerts has been confirmed to remain stable. In particular, a 30% increase in the number of blocks through Fake Signal is seen as an indicator that users have been actively using the new alert system with confidence.

These changes suggest that a higher level of automation in detecting and blocking malicious users has been achieved and that a proactive reporting ecosystem, where users also autonomously respond based on alerts, is being established.

Kakao plans to continuously strengthen its capabilities for preemptive blocking of malicious users and harm prevention by advancing a user participation-based reporting function and a sophisticated warning system.