Events
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Governance & Risk Management
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Nullcon
Live Hacking Event Offers New Insights Over Traditional Testing
In today’s threat landscape, as attackers grow more sophisticated, organizations are finding that direct collaboration between ethical hackers and development teams offers advantages traditional testing methods can’t always match.
See Also: AI, Zero Trust and SASE: Modernizing Security
Organizations are beginning to shift left by embedding measures into every stage of security development, in addition to using the external expertise of ethical hackers to close any gaps development teams might have overlooked in the process.
This approach was put to the test during a live bug bounty event hosted by YesWeHack at Nullcon Berlin 2025. “Proactive testing like a bug bounty program means a lot to us. It’s an additional layer of testing you need to add,” said Patricia Leppert, team manager of customer trust and security, TeamViewer.
For independent, ethical hackers such as Raphaël Arrouas, working directly with organizations always offers something to uncover. “We are the people who are called when everything else has been done and there’s always something to find,” said Arrouas.
In this video interview with Information Security Media Group at Nullcon Berlin 2025, Leppert and Arrouas also discussed:
- The value of CAN status and responsible disclosure;
- Why continuous testing post-release is critical;
- How orgs are combating scams via product features and collaboration.
With a focus on creating a secure environment for customers and ensuring their trust, Leppert serves as team manager of customer trust and security at TeamViewer, working with stakeholders, technical experts, senior leaders and customers to create actionable solutions.
Arrouas is a security engineer and independent ethical hacker with a background in offensive security consulting. Since 2019, Arrouas has worked as the first full-time bug bounty hunter in Switzerland, ranking first in the nation from 2022 to 2024.

