Thank you for joining us at Black Hat USA 2025 and exploring how DXC can help strengthen your security posture, advance your zero trust journey and mitigate risk. Panel discussion Master exposure management: mitigating cyber risk across the entire attack surface Date/Time: Wednesday, August 6 , 2025 | 4:25-4:45 pm Location: Mandalay Bay L, level 2 of the conference center Speakers: Dawn-Marie Vaughan (DMV), Cybersecurity Global Offering Lead, DXC TechnologyGreg Goetz, VP, MSSP and Global Strategic Services Partners, TenableDennis Van Elst, Red Team Operations Lead, Global Offense Operations, DXC Technology The journey to a mature exposure management program is a critical endeavor for organizations aiming to fortify their cybersecurity posture. Panelists emphasizes the importance of practical steps that can be taken to systematically reduce cyber risk across the entire attack surface. Discussion of a comprehensive approach to identifying, assessing, and mitigating vulnerabilities, ensuring that every potential entry point is secured. Implementing robust exposure management practices not only enhances security but also builds resilience, enabling organizations to navigate the complex and ever-evolving cybersecurity landscape with confidence. Speakers Dawn-Marie Vaughan (DMV) Cybersecurity Global Offering Lead, DXC Technology With 15 years of experience in cybersecurity and emerging technologies, DMV has a proven track record of leading strategic initiatives, developing security solutions, and managing large-scale projects. Her previous roles include driving advanced security strategies and strengthening offerings, including threat advisory services and data analytics. At DXC, she is focused on enhancing security offerings to help clients stay ahead of emerging threats and trends. A passionate advocate for women in technology, DMV founded the Women in Technology (WIT) association in a prior role. Connect with Dawn-Marie on LinkedIn Dennis Van Elst Red Team Operations Lead, Global Offense Operations, DXC Technology Dennis Van Elst is a red team operator, infosec lecturer and purple team advocate. At DXC, he actively promotes collaboration between the Strikeforce Red Team and internal Blue Teams, such as Threat Hunting, Digital Forensics, Incident Response and Threat Intel Connect with Dennis Van Elst on LinkedIn Greg Goetz VP, MSSP and Global Strategic Services Partners, Tenable Greg Goetz is responsible for accelerating Tenable’s growth with advisory firms, global system integrators, and service providers with the goal of helping customers better understand and reduce their cybersecurity risk. He has over 30 years of experience in the technology industry, spending the majority of his career in the cybersecurity market which he is very passionate about. Prior to Tenable, Greg held various leadership positions at Symantec and led the Global Strategic Alliance team for Veritas after it was spun out of Symantec in 2016. For the last several years, Greg has been recognized as a “Channel Chief” by Computer Reseller News (CRN) in recognition of accomplishments in the managed security industry.
Dawn-Marie Vaughan (DMV) Cybersecurity Global Offering Lead, DXC Technology With 15 years of experience in cybersecurity and emerging technologies, DMV has a proven track record of leading strategic initiatives, developing security solutions, and managing large-scale projects. Her previous roles include driving advanced security strategies and strengthening offerings, including threat advisory services and data analytics. At DXC, she is focused on enhancing security offerings to help clients stay ahead of emerging threats and trends. A passionate advocate for women in technology, DMV founded the Women in Technology (WIT) association in a prior role. Connect with Dawn-Marie on LinkedIn
Dennis Van Elst Red Team Operations Lead, Global Offense Operations, DXC Technology Dennis Van Elst is a red team operator, infosec lecturer and purple team advocate. At DXC, he actively promotes collaboration between the Strikeforce Red Team and internal Blue Teams, such as Threat Hunting, Digital Forensics, Incident Response and Threat Intel Connect with Dennis Van Elst on LinkedIn
Greg Goetz VP, MSSP and Global Strategic Services Partners, Tenable Greg Goetz is responsible for accelerating Tenable’s growth with advisory firms, global system integrators, and service providers with the goal of helping customers better understand and reduce their cybersecurity risk. He has over 30 years of experience in the technology industry, spending the majority of his career in the cybersecurity market which he is very passionate about. Prior to Tenable, Greg held various leadership positions at Symantec and led the Global Strategic Alliance team for Veritas after it was spun out of Symantec in 2016. For the last several years, Greg has been recognized as a “Channel Chief” by Computer Reseller News (CRN) in recognition of accomplishments in the managed security industry.