TeamViewer and YesWeHack partner for live hacking event at NULLCON Berlin 2025

"Some of the vulnerabilities reported introduced entirely new angles for us to explore, which is both exciting and humbling. It really underscores the importance of responsible disclosure and the power of collaborative security. We're not just fixing bugs, we're evolving our mindset and approach to security," said Patricia Leppert, Team Manager, Customer Trust & Security.

Security is a top priority for TeamViewer, as our remote access solutions handle sensitive data across critical industries. Our experts apply advanced protection measures and operate a specialized security organization with 24/7 monitoring and global compliance.

Cassim Khouani, also known by his online alias Aituglo, took first place and received the award for Biggest Impact. He said the experience was particularly interesting, as he was familiar with the TeamViewer product but had never tried to hunt bugs on it before.

Khouani described TeamViewer as a hard target and did not find any vulnerabilities within our user permission system.

TeamViewer's Bug Bounty Strategy

To complement traditional penetration testing, TeamViewer launched its bug bounty program in 2021. Starting privately, it has evolved into a multi-tiered initiative that now plays a central role in the company's security strategy and supports proactive vulnerability management and responsible disclosure.

Looking ahead, TeamViewer will introduce a new bug bounty program for TeamViewer DEX and expand its public and private programs. As the technical landscape continues to evolve, bug bounty initiatives help mitigate emerging vulnerabilities and complement traditional testing methods. These efforts aim to further strengthen product resilience and deepen collaboration with the security community.