What We Do
Stay Ahead with Adaptive, Comprehensive Security
Cyber threats don’t wait—neither do we. Powered by hacker insights, Theori’s offensive security solutions ensures you're always one step ahead.
AI for Security
Outsmart Threats with AI-Powered Efficiency
AI is transforming the way cyber threats emerge—but it can also transform your defense. Protect your applications with Theori’s tireless AI security that thinks like an attacker but works on your timeline.
Xint
The AI Hacker for Continuous Security
AI-powered hacker solution that identifies vulnerabilities with human-level expertise, greater speed, and cost efficiency.
SAST
Code Safe from the Start
Secure your code effortlessly with real-time scanning and identify vulnerabilities without compromising efficiency.
Coming Soon
Security for AI
Protect the Future of Intelligence
AI is revolutionizing industries, but it’s also the next big target for cyber threats. Theori keeps your AI secure, trustworthy, and protected from emerging threats.
αprism
LLM Security for Every User, Every App
AI-native security that continuously monitors prompts and model responses to guard your LLM interactions.
AI Red Teaming
AI Security From the Inside Out
Expert-led audits covering every angle of your AI system to identify vulnerabilities before they can be exploited.
Cybersecurity Training
Equip Your Team for Continuous Security
The best way to stop cyber threats is to understand how they work. Theori’s hands-on training turns your team into elite security professionals with real-world hacking skills.
Dreamhack
Where Hackers are Made
Master real-world attack techniques and advanced offensive security skills through interactive, self-paced learning—guided by top security experts.
Dreamhack Enterprise
Build an Elite Cybersecurity Team
Future-proof your cybersecurity workforce with practical training, customizable curriculums, and in-house competitions—all effortlessly managed.
Who We Are
Theori, Trusted Through Results
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Customers Satisfied
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Vulnerabilities Discovered
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Global Clients
8 DEF CON wins
Record holder for the largest global hacking competition
#1 in AI Cyber Challenge
Semifinals
AIxCC hosted by DARPA of the US Department of Defense
Built by
Elite Hackers
We’ve broken and secured the world’s toughest systems, winning more than 50 international hacking competitions along the way.
AI-Powered, Real-Word Tested
We don’t use AI as a buzzword, it enhances the proven expertise we’ve built through years of real-world security.
Security at Every
Level
We secure everything—AI, applications, networks, and people—ensuring no weak points in your defense.
Trusted by Industry Leaders
Microsoft, Google, and leading organizations trust us because we don’t just promise security, we prove it through research and real-world results.
Security Partner to the World's Top Innovators
With the help of Theori's security consulting, we were able to reduce actual security risks through testing realistic scenarios rather than a checklist-based approach.
TVING, Information Security
We were greatly impressed and satisfied with Theori’s excellent blockchain technology and their ability to identify vulnerabilities and penetrate services.
Dunamu, CISO
Theori's security consulting service has significantly strengthened our corporate security, especially thanks to their high quality security reports.
Planetarium Labs, Blockchain Division
Theori's bug bounty platform PatchDay provided high quality triage services that saved us much time and resources. It was a very convenient central platform for all bug bounty related management and communication.
Bifrost, Security team
Theori's education platform Dreamhack has helped me consider potential vulnerabilities in the coding process, and also better understand the complex security procedures such vulnerability assessments and penetration testing before the release of a new service.
LG Electronics, H&A HQ, Living Solution Department
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