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Mark Ziesemer Information Security Architect Heartland Business Systems (HBS)
Mark Ziesemer is the Information Security Architect at Heartland Business Systems (HBS), bringing over 20 years of comprehensive experience in the IT and cybersecurity space. A graduate of UW–Eau Claire, Mark has spent the past seven years at HBS, where he provides strategic leadership in security architecture, governance, risk, and compliance.
Mark holds multiple industry certifications, including (ISC)² CISSP, CCSP, and CSSLP, as well as a broad range of Microsoft credentials such as Cybersecurity Architect Expert and Azure Solutions Architect Expert. He is a Microsoft Customer Immersion Experience (CIE) Qualified Presenter and a Cyber Liaison Officer with the Wisconsin Statewide Intelligence Center (WSIC). His expertise spans infrastructure, cloud security, identity and access management, and secure software development. Mark also serves as a trusted Virtual Chief Information Security Officer (vCISO) to clients across industries. |