Turning theories into innovation, Theori tackles the most difficult cybersecurity challenges from an attacker’s perspective and conquers them as the best strategic security experts.

Our goal is to lead the industry at the top of our game, train the next generation of security leaders, and raise the standards of security through unwavering ethical transparency.

Brian Pak

Theori Co-founder & CEO

We hack hackers and lead at the forefront of cybersecurity.

Offensive security is a proactive approach to protecting computer systems, networks and individuals from attacks. The security and stability of services and products are test from an attacker perspective, so that they can be fixed before malicious attacks.

How We Work

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Unmached Performance

Theori consists of elite hackers who have won many international competitions. The team continues to make top-class achievements.

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Innovation in Motion

Innovate research and development is at the core of Theori. We are always challenge-hungry, and never settle for the status quo.

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Synergy and Growth

Teamwork enables us to solve seemingly impossible challenges. We support each other and grow together as one team.

Awards & Achievements

Theori has won various hacking competitions in both Web2 and Web3 fields, and holds the world record for most wins at DEF CON, the World Cup of hacking competitions.

ARWeave Golden Floppy Disk

1st

ARWeave Golden Floppy Disk

1st

BSIDES CTF 2024

1st

LINE CTF 2024

1st

Polygon ETHDenver Hack a Smart Contract

1st

ARWeave Golden Floppy Disk

1st

ARWeave Golden Floppy Disk

1st

BSIDES CTF 2024

1st

LINE CTF 2024

1st

Polygon ETHDenver Hack a Smart Contract

1st

Pwn2Own 2024

Ubuntu Desktop exploit

Pwn2Own 2024

VMware SBX with Windows LPE exploit

0CTF/TCTF

1st

Blaz CTF

2nd

CODEGATE 2023

1st

Pwn2Own 2024

Ubuntu Desktop exploit

Pwn2Own 2024

VMware SBX with Windows LPE exploit

0CTF/TCTF

1st

Blaz CTF

2nd

CODEGATE 2023

1st

Raising the standard of security at every turn.

2024

Apr

'Presidential Commendation' from the President of South Korea

2023

Nov

Cybersecurity education community ‘Dreamhack’ reaches 40 thousand users

Sep

Blockchain security risk management platform ChainLight DART launched

Jul

'Appreciation Plaque for Information Security Education' from the National Intelligence Service of Korea

2022

Sep

Chain data attestation protocol ‘Relic Protocol’ launched

Sep

Blockchain security audit service ‘ChainLight’ launched

Aug

Cybersecurity Training Program ‘Dream Academy’ launched

Jul

K-Cybersecurity Excellence Award from the Ministry of Foreign Affairs

Jun

$15.5 million seed round funding led by K2G Fund

2021

Sep

Bug bounty platform ‘PatchDay’ launched

Jun

Corporate cybersecurity education platform ‘Dreamhack Enterprise’ launched

2020

Apr

Cybersecurity education platform 'Dreamhack’ launched

2019

May

Threat intelligence database 'Fermium-252' launched

2018

Sep

Funding from NAVER

2017

Sep

Theori Korea established

2016

Jan

Theori Inc. established