The City of Charleston, South Carolina, has appointed Sean Sweeney as its new Chief Information Officer, bringing more than 20 years of experience in cybersecurity, enterprise technology, and digital innovation to the role. He was formally introduced at the November 10, 2026, City Council meeting.
Sweeney joins Charleston from Oracle, where he served as Vice President of Security Operations and Global Head of Security Trust and Response from 2021 to 2026. During his tenure, he established and led the company’s Integrated Cyber Center, overseeing global incident response, crisis management and security communications. He also advanced the use of AI-driven technologies for threat detection, vulnerability discovery and automated remediation.
Previously, Sweeney served as Global Chief Security Advisor at Microsoft from 2017 to 2021, advising enterprises, government agencies and regulated industries on cloud security, risk management and data protection.
Since 2020, he has also been affiliated with the University of Pittsburgh’s Institute of Cyber Law, Policy and Security as a practice scholar.
As Charleston’s CIO, Sweeney will lead the city’s IT strategy, enterprise modernization, cybersecurity and AI initiatives, focusing on improving government efficiency, empowering city employees and enhancing digital services for residents.
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