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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, helping protect the world's data against cyber-attacks in a challenging, interconnected environment.

Mary leads a global team of 8,000+ professionals in 130+ countries. Under her leadership, IBM Security’s portfolio has evolved to operate on open security standards, enabling interoperable multi hybrid cloud environments.

With 30+ years of industry experience, Mary is a strategic partner to the world’s largest companies’ CEOs, CISOs, and CIOs on cybersecurity, AI, and IT strategy. She is a mentor and advocate for diversity and inclusion in the workplace.