Kakao Bank's Tech Stories at if(kakao)25

On Day2, Elena of the Technology Research Institute shared the development process of the prompt attack detection and blocking model lab.fortress. The talk covered the flow from defining prompt attacks, to building data, to developing the final model, and introduced detection technology, Multi Turn attack expansion, and output guardrail research as key achievements.

At Krew Day on Day3, 7 CTOs from the Kakao community gathered to broadly discuss the developer's role in the AI era, junior growth, and support for AI adoption among non-developer roles. Kakao Bank CTO Conrad shared the challenges and actual attempts at financial innovation within a regulated environment, delivering the message that the AI era is a massive wave of change that we must ride together.

At the demo station, Kakao Bank operated 4 booths to let visitors experience the technology firsthand. Mollbang is a casual AI game service that won at Bankerthon, drawing attention for combining Multipeer Connectivity with AI to match with the nearest person and answer impromptu questions. Kori is an LLM-based AI code review system integrated with the in-house GitLab, designed to automatically check code quality and security even in a regulated environment. Zeus is an integrated tool for iOS developers that handles build, test, and deployment in one place, offering API Mock, network monitoring, screen recording, and JIRA/Jenkins integration.

Cucumber allows test scenarios to be written with intuitive syntax, automating everything from enrollment to termination in the complex fund domain, and DOMS is a data center operations management system built with WebGL and Three.js that reduced equipment placement and lookup time from 15 minutes to 1 minute. Ultimately, this participation showed that Kakao Bank is using technology to boost productivity and stability even within a regulated and complex domain.