Competed in FIESTA 2024, solving all cybersecurity challenges to secure top spot
Fourth consecutive victory since 2021, reaffirming top-tier security capabilities in Korea

Viva Republica, the operator of the financial super app "Toss," announced that it has won the FIESTA 2024 (Financial Institute’s Event on Security Threat Analysis) competition, hosted by the Financial Security Institute (FSI).

This event was held to enhance cyber threat analysis and incident response capabilities in the financial sector. Participating teams are presented with cybersecurity questions based on real-world cyber threat scenarios to determine a winner. This year’s event took place from October 4 to October 6 over three days.
Toss participated under the team name “Decaffein Matcha Latte,” consisting of four white-hat hackers from its security team: Jeongsu Choi, Jaeseung Kwon, Dongseok Kang, and Jaesung Kim. They successfully solved all the questions related to cyberattacks in areas such as generative AI, cloud, and supply chain, securing first place. Since first competing in 2021, Toss has won the competition four consecutive times, demonstrating its top-tier financial capabilities in Korea.
Toss has a dedicated white-hat hacking team, including the four competition participants. The team regularly conducts cyberattack drills to enhance its security framework. It also runs a bug bounty challenge (simulated hacking competition) year-round to research new security technologies.
As a result, Toss has obtained global security and data protection certificates, including ISO27001, ISMS-P, PCI DSS Level 1, and ISO 27701, receiving recognition for maintaining a world-class information security system.
“We are happy to prove our security capabilities with this fourth consecutive win,” a Toss representative said. “We will continue investing in and researching security to ensure a safe financial experience for our customers.”


Competed in FIESTA 2024, solving all cybersecurity challenges to secure top spot
Fourth consecutive victory since 2021, reaffirming top-tier security capabilities in Korea

Viva Re

# FSI

Toss Wins FIESTA Competition Hosted by FSI