Holger is a long term security enthusiast started to work for Siemens as a telecommunication specialist building Hicom PBX systems and later networking systems. After passing the CCIE exam, he moved to Cisco 16 years ago, worked as penetration tester and as security consultant supporting large customer projects. His last job role at Cisco was leading the Cyber Security Technical Advisor Group in EMEA. Holger is now working as a Security Researcher in TALOS. He did security research in a couple of sectors like botnet technology, sandbox bypassing, VPN MITM and developed several tools for penetration testing.
