Sundar Nagarajan is an accomplished Information Security executive with a proven track record in the technology and financial sectors. As a Business Information Security Officer and Vice President of Cyber Risk Advisory at Aon Inc., Sundar partners with C-suite leaders and board members, translating complex security challenges into actionable strategies that protect enterprise value. With over 25 years of experience guiding Fortune 500 corporations through evolving cybersecurity landscapes, Sundar is known for driving robust security programs, cultivating high-performing teams, and leading initiatives that align security with business objectives.

Sundar’s expertise spans vulnerability management, risk assessment, data protection across multi-cloud environments, regulatory compliance (NIST CSF, ISO 27001/27002, PCI-DSS, GDPR, HIPAA, and more), information security contract management, and customer audits. He has successfully overseen the security of thousands of applications in hybrid cloud setups, advised on third-party/vendor risk, and built KPIs/KRIs frameworks to monitor cyber risk maturity. Having managed both programmatic enhancements and tactical incident response, Sundar excels at bridging technical and non-technical audiences, mentoring global teams, and steering key security projects to completion within scope and budget.

A natural leader and trusted adviser, Sundar is highly regarded for his ability to inspire teams, foster strong client and vendor relationships, and deliver security