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About Collin Geisser
Collin is a Lead Security Architect and Solution Security Architect CISSP-certified, with deep expertise in Application Security, Secure Software Development Lifecycle, incident response, regulatory frameworks such as GDPR and former FullStack Engineer. Collin helps other teams and organizations build a strong and scalable Security Organization. He serves as the single point of contact for all security-related topics within DevOps@Software, a Software Development Department at Swisscom, driving strategic security planning, managing security risk backlogs, leading communities of practice, organizing security trainings, security events, and aligning organizational OKRs with security goals. With experience as an Ethical Hacker and Bug Bounty Hunter, Collin brings a practical, offensive-security perspective into architectural decision-making, ensuring that resilience and security are embedded in the design and delivery of complex systems. Beyond his architectural responsibilities, he is passionate about training and mentoring, empowering teams to adopt DevOps security practices, and creating innovative formats to deepen product teams’ security mindset. Collin also focuses on the secure integration of AI/LLM into enterprise applications, specializing in implementation security rather than LLM model development. His interests span zero trust architecture, storytelling in security communication, and exploring new ways to strengthen systems by combining strategic architecture with hands-on adversarial testing. In his own words: “I see security as a fabric woven into every part of technology and collaboration. My mission is to help teams not just ‘do’ security, but to live it as part of their daily delivery.”

Using Data to Overcome Business Resistance to Security Champions

Posted by By Collin Geisser October 7, 2025Posted inGuest Posts
In the Security Champion Program Success Guide blog, I invite industry professionals to offer their opinions, thoughts, experiences, and viewpoints about Security Champion programs in order to expand our collective…
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About Katilyst

Katilyst designs the programs and builds the platform that turn a handful of motivated engineers into lasting change in how your organization builds software.

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About this Guide

Created by Dustin Lehr, Co-founder and CPTO at Katilyst. The methodology is licensed under Creative Commons Attribution 4.0. The Katilyst name, logo and product descriptions are not covered by the license.

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