Mary O'Brien

General Manager, IBM Security

Mary O’Brien is the General Manager of IBM Security, the largest enterprise security company in the world. She leads a global team, focused on delivering IBM’s extensive security product and services portfolio. She is a strategic partner to many CEOs, CISOs and CIOs on cybersecurity, AI and IT strategy. Before taking over as head of the IBM Security unit, O’Brien led Research and Development for the division. A lifelong engineer, O’Brien has more than 30 years of industry experience developed through tenures in the UK, US and Ireland.